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No promises of cures, capabilities, hair loss results, or otherwise are given by the author, herein. 2 Contents Introduction 4 Chapter 1: What Really Causes Hair Loss? 7 Chapter 2: The 3 Layer System 46 Chapter 3: Hair That Keeps Getting Better 59 Chapter 4: My Journey 65 Got Questions? 73 Bonus Section 92 Appendix 105 Acknowledgments 110 References 111 3 Introduction History is full of accidental discoveries that ended up changing the world. But the story of University Professor, Dr Brian Freund, who was trying to treat headaches, and ended up regrowing his patients’ hair, is probably one of the more unusual and underrated discoveries out there. Not only was this accident groundbreaking, because the amount of average hair regrowth was about 2x what would be expected from finasteride (the gold standard of hair loss treatments), but because it reveals a fundamental truth about the real cause of hair loss which had been hidden up until that point. With this new finding about the real cause of baldness, there was once again the possibility for innovative new solutions for hair loss treatments that worked at the root cause. 4 This is what this book is about. To start with, we’ll go into detail about the anatomy of the scalp. Since the scalp is made up of different layers, it’s important to understand what each layer does and the role it plays in hair loss. After learning about the layers of the scalp, you’ll see how a doctor trying to treat recurring headaches could accidentally regrow his patients’ hair. Next, in Chapter 2, you’ll learn about the 3 Layer System which fixes hair loss at the root cause, and how this all makes perfect sense given what you’ve just learnt about the anatomy of the scalp. Keep in mind, if you’re currently using, or plan to use, minoxidil or finasteride then you’ll want to pay special attention to this chapter because this 3 Layer System can more than 2X the effectiveness of these well-known hair loss treatments (I’ll show you how later, with proof from new clinical studies.) 5 In Chapter 3 you’ll see why fixing hair loss at the root cause, using the 3 Layer System, can give you hair that will continue to grow thicker and healthier with time and how this is different from “band-aid solutions” where results quickly plateau after 6 - 18 months as the traditional treatments gradually become less effective at regrowing more hair. So if you’ve tried hair loss treatments like minoxidil, finasteride, laser caps or PRP before and were frustrated with the lack of results you’ll want to make sure you read this chapter. Or if you’re interested in a non-pharmaceutical approach to fixing hair loss this is for you as well. Let's get started by looking at the different layers of the scalp. 6 Chapter 1: What Really Causes Hair Loss? The scalp is made up of 3 main layers: ● Layer 1: The Epidermis ● Layer 2: The Dermis (and adipose layer) ● Layer 3: The Galea These 3 layers are connected together to form the main portion of the scalp, which looks like this: 7 The Scalp Layers Layer 1, the epidermis is the thin top layer of the scalp which acts as a protective barrier against the outside world. Layer 2, the dermis, is below the epidermis and is the substrate which contains the hair follicle bulb. Layer 3, the galea, is a sheet of connective tissues which overlays the skull bone, and is below the dermis, as shown in Figure 1. I’ll explain these layers in more detail later on. The Hair Follicle The hair follicle bulb, also known as the dermal papilla, is where the hair shaft grows from, and it sits in the dermis (Layer 2). 8 Blood supply feeds the dermal papilla, via a vascular network which travels through and above the galea, and into the root of the follicle. The hair follicle shaft grows from the bulb and pushes out through the dermis and epidermis, to become the hair on our head we know and love. That’s the quick overview of the scalp and hair follicle, which leads us to the next point. What actually causes hair loss? Hair loss (specifically I mean androgenetic alopecia, or male/female pattern baldness) at the most fundamental level is caused by reduction of the hair follicle blood supply and growth space. As blood supply and growth space decreases, the hair follicle gets smaller and eventually stops growing altogether. 9 All living cells require nutrients and oxygen to survive and grow. Nutrients and oxygen are delivered to the cells from the blood supply. If the blood supply is low, those living cells and the structures they make up start to atrophy (shrink) and won’t be replaced by new ones. When it comes to hair loss, we see this kind of atrophy all the time; we just call it something different. It’s called “hair follicle miniaturization”. It means the hair follicles progressively get smaller and smaller over time, until they eventually disappear altogether. The balding process due to constricted blood supply and growth space 10 This hair follicle miniaturization process is caused by constriction of the hair follicle blood supply and growth space, and it takes place within the 3 layers of the scalp. You are going to learn how each layer of the scalp contributes to this process. In doing so, you’ll see why traditional hair loss treatments have never been very effective; because they only treat hair loss in 1 layer of the scalp. For now, let’s look at each layer of the scalp individually. Layer 1: The Epidermis The epidermis is the outermost layer of the scalp. It is less than 0.5mm thick and serves as a protective barrier between the scalp and the outside world. Many people with hair loss report an itchy scalp, dandruff and overproduction of scalp sebum (which is the oil that is naturally secreted by the skin to condition the hair.) This is a result of what’s going on in deeper layers of the scalp. But 11 the consequence is that the epidermis is coated in a layer of ‘plaque’ which blocks the hair follicle pores, and contributes to inflammation. I took the photographs below using a microscope. Notice how the epidermis surrounding the unequally sized hairs is white and flaky and almost blocking the hair follicle pore. The hairs are thinner or thicker depending on how far down the hair follicle miniaturization process they are. 12 In the second image the hairs are uniformly thicker and show no signs of miniaturization. But notice also how the scalp is free from dandruff and sebum. This layer of plaque on the epidermis blocks the scalp pores and causes microinflammation. It also stops topical (meaning ‘applied to the scalp’) active ingredients, such as minoxidil, from penetrating into the dermis where they can be effective (more on this later). In fact, studies have shown that less than 5% of topically applied minoxidil is actually absorbed past the epidermis. (1) 13 Layer 2: The Dermis The dermis is a connective tissue layer sandwiched between the epidermis and galea. There’s also a layer of adipose tissue below the dermis, however it’s not so important for our understanding of hair loss. The dermis is composed of collagen, elastic tissue, and other extracellular components including vasculature (blood vessels), nerve endings, hair follicles, and glands. The dermis makes up the tissue in which the hair follicle bulb grows. As such, its health is incredibly important for the proper functioning of the follicle. Think of it like a plant growing in soil. If the soil is a dry, tough, constricting layer of rock, there’s no way a healthy plant can grow. Thick, healthy hairs grow from a healthy dermis, and as we’ll see, if the structure of the dermis deteriorates, hair loss soon follows. 14 What happens in the dermis that reduces blood supply and growth space? Take your hand and pinch an area of your scalp where you are experiencing hair loss. No doubt you will notice the scalp is tougher and less flexible than the scalp at the back or sides of your head where your hair is thick. In advanced cases of hair loss, the scalp goes shiny. We’ve all seen this kind of shiny bald scalp as in the photo below: What is happening is that the structure of the dermis is actually changing. In other words, the structure and anatomy of the dermis are changing from what is normally a 15 soft, flexible and thick layer to the tough, rigid, thin and shiny layer. So what exactly is this process, and how is it related to hair loss? The alteration of the structure of the dermis is a process called ‘dermal fibrosis’. The best analogy I can give is that dermal fibrosis is similar in many ways to tissue scarring. If you’ve ever suffered an injury serious enough to form a permanent scar then you have first-hand experience of fibrosis. To fill in the gap from the wound, the body deposits irregular collagen, which replaces the normal structure of the skin, leaving a scar. Have you ever noticed how hair can’t regrow in scar tissue? This is because the irregular collagen deposits are so tightly packed that the follicles don’t even have any space to grow. Predictably, the blood supply also gets constricted, and the dermis and adipose thickness gets reduced. 16 The balding process is the process of the dermis changing structure and becoming more fibrotic due to the overproduction of irregular collagen which restricts hair follicle growth space and blood supply. The process is so slow and gradual that we don’t notice much of a change from day to day. The hair follicles literally become surrounded by constrictive layers of collagen, and eventually the normal follicle structure is completely destroyed, replaced by fibrotic collagen. This results in a tougher, more rigid scalp with lower microvasculature (micro blood supply), and less hair. 17 To quickly summarise; the dermis is the bed of the hair follicle, as such, when the structure of the dermis changes it reduces hair follicle growth space and blood supply leading to follicle miniaturization. Think of it like a microscopic tightening around each hair follicle, literally strangling the blood supply and growth space and consequently leading to smaller and smaller hair follicles (aka ‘hair follicle miniaturization’.) Before we go into why this process happens, let's double check the clinical studies to see if blood supply is actually lower in balding scalp tissues. Does blood supply really go down in balding scalps? Researchers sought to find out if balding scalps had lower blood supply than non-balding scalps, and a number of studies were conducted. 18 One study found that men who suffer from pattern hair loss have significantly reduced scalp blood flow compared to men without hair loss. (2) Furthermore, balding men have significantly more blood flow in the non-balding parts of their scalp compared to the balding frontal areas. But men who don’t suffer from hair loss show no such variation. (3) That’s two confirmations that blood supply goes down in balding scalps. In another study, researchers estimated that subcutaneous blood flow in the balding scalp is approximately 3x lower than that of men without hair loss. (4) 19 When you think about the fibrosis findings we discussed earlier, this makes sense. As irregular collagen fibers expand into space previously occupied by healthy tissue, the ability of blood vessels to supply the hair follicles decreases. The blood vessels literally cannot find a way to pass through the fibrotic collagen, and the scalp cannot receive an adequate blood supply. The result is reduced amounts of oxygen and other nutrients necessary for normal hair follicle growth. 20 The author of one study on hair loss and blood supply, Dr Klemp MD from the University of Copenhagen, writes: “Growth and regrowth of the hair in the scalp depends upon a sufficient nutritive blood supply to the hair follicles. The significantly reduced SBF in the scalp of patients with early male pattern baldness, as found in this study, might explain the loss of hair and the inability to regrow hair.” (4) The author of one particular study on dermal fibrosis and hair loss, Dr Won from Seoul National University of Medicine in Korea writes: “It was found that collagen bundles were significantly increased in balding vertexes than in non-balding occiput scalp skin. A near 4-fold increase in elastic fibers was observed in both vertex and occiput scalp skins with male-pattern-hair-loss versus controls.” (5) But what actually causes fibrosis in the first place? Enter DHT. 21 We’ve seen how fibrosis in the dermis starts to restrict the growth space, and cut off the blood supply to the hair follicle. We also saw how multiple scientific studies confirm that a balding scalp has reduced blood and oxygen levels compared to men without hair loss. But what actually causes dermal fibrosis in the first place? This is where DHT comes into play. If you have spent any time at all researching pattern hair loss, you have surely come across DHT. It is the very first thing you will find mentioned in any mainstream hair loss article, and with good reason. DHT is short for ‘dihydrotestosterone’, and is a male hormone made from testosterone. During early life, DHT is critical for the development of the male genitalia and secondary sexual characteristics like a deep voice and bodily hair. 22 We know from case studies that men who can’t produce DHT never go bald. This led pharmaceutical companies to look for a way to block DHT to try and cure baldness. Enter finasteride. Oral finasteride is the most commonly used hair loss medication, and it works by blocking DHT throughout the body. After 3 to 12 months, about 80-90% of finasteride users will stop losing further hair, and about two thirds will also see some small amount of hair regrowth. (6) So, even though DHT is undoubtedly involved in the hair loss process, the way it actually causes hair loss is not so clear. In other words, scientists knew that blocking DHT stops hair loss, but they didn’t know exactly why DHT causes hair loss in the first place. 23 They also couldn't explain why blocking DHT is sufficient to stop hair loss, but never results in full recoveries of bald areas. Up until now, the mainstream understanding of the role of DHT was that some hair follicles are ‘sensitive’ to DHT, and others aren’t. This sensitivity was put down to ‘genetics’ and that was the end of the discussion. The scientific consensus was that hairs fall out in the front and crown of the scalp but not the sides and back because the front and crown follicles are “genetically sensitive to DHT”, whereas the ones on the side and back are not. But this was not really a satisfying explanation. Saying something is ‘genetically sensitive’ is basically saying we don’t really understand what is going on. Clearly genetics are involved in hair loss, but that’s not nearly specific enough to be very useful in treating it. 24 In recent years the scientific consensus has started shifting to an understanding that DHT plays a role in dermal fibrosis. That’s why blocking DHT stops further hair loss, but typically only regrows a small amount of hair. Dermal fibrosis has changed the structure of the scalp, reducing hair follicle blood supply and growth space, but blocking DHT doesn’t reverse the fibrosis. So why does DHT cause dermal fibrosis which then leads to hair loss? It turns out, DHT only causes dermal fibrosis under certain conditions, and that certain condition is when the scalp has on-going (chronic) inflammation. But why is there chronic inflammation in the scalp in the first place? Well the most likely source of chronic inflammation is scalp tension. 25 Put it like this: DHT + inflammation (from scalp tension) + genetic predisposition = dermal fibrosis. At this point the science of why “DHT + inflammation via scalp tension = dermal fibrosis” gets more complicated, so I’ve added a section to the Appendix where you can read more about it if you want. For now, the main question is: What is scalp tension and what causes it? To answer this question, we move to the next layer of the scalp, the galea, where we learn that reducing scalp tension can stop hair loss altogether, without even blocking DHT. Layer 3: The Galea Layer 3 is arguably the most important layer of the scalp, because the galea is connected with all the layers above. Blood supply flows through and above the galea and branches into the top layers of the scalp. 26 The galea is a tough, fibrous sheet of connective tissue, which covers the entire top of the head and is held in place by muscles connected at the front, back and sides. Since the layers of scalp tissue are all connected, when the galea is pulled tight, all the other layers (adipose, dermis and epidermis) are pulled tight as well. Blood vessels travel through and across the galea, up to the dermis and epidermis tissues, supplying them with the nutrients and oxygen needed for growth and repair. If you want a better visual understanding of the size and position of the galea, look at someone with advanced-stage male pattern baldness. The area where he is bald, that is where the galea is positioned, underlying the dermis. 27 The parts of the scalp where hair continues to grow even in advanced stages of male pattern baldness, there is muscle, rather than galea, underlying the dermis. Knowing that hair loss takes place only in the scalp area that’s directly above the galea, researchers suspected that tension in the galea might be involved in hair loss. Fortunately, researchers conducted two experiments to see if tension in the galea affects hair loss and hair growth. 28 Let’s look at those studies now. What if you relax the muscles attached to the galea? Dr Brian Freund was trying to help patients with tension headaches and wanted to see if injecting the scalp muscles with Botox would help resolve the headaches. Botox is a substance which causes the muscle to relax by blocking the nerve ending. With the nerve endings of the muscles blocked, the signal to contract the muscle can’t get through, leaving the muscle in a state of ‘flaccid paralysis’. Botox is most commonly used to reduce facial wrinkles by relaxing the facial muscles. What Dr. Freund found when he injected the scalp muscles with Botox was absolutely fascinating. 29 Not only did the Botox injections help reduce the tension headaches, but some of the patients who were losing hair noticed their hair loss had stopped. Intrigued by the findings, Dr Freund and his team conducted another study, this time focusing on patients with male pattern baldness. They took 50 male patients and injected the muscles attached to the galea with Botox. Those muscles became completely relaxed for as long as the Botox lasted (4 - 6 months). In the diagram below you can see where the researchers injected the Botox: 30 With the muscles now relaxed and not pulling down so forcefully on the galea, would the tension decrease and would the hair loss stop? Yes. In fact after 48 weeks and 2 rounds of Botox, male patients with hair loss noticed an improvement in hair growth of 18%. (7) 31 The author of the study writes: “Mean hair counts for the entire group showed a statistically significant (p < 0.0001) increase of 18 percent between baseline and week 48”. Hair counts are measured by using a fixed 2cm2 area of the scalp and photographically counting the number of hairs in the same area at the beginning and end of the experiment. Just to put the results in perspective, an 18% hair growth increase easily beats the average 11% increase that follows from a year of daily 1mg oral finasteride. (6) Except unlike oral finasteride, the only side-effects from the Botox injections were fewer wrinkles and less headaches. On the next page are two before and after photos from male patients who had their scalps relaxed via Botox injections: 32 The patients above received 100 units of Botox every 3 months for 12 months. Photos show the baseline to 12 month period. 33 Simply by relaxing the muscles connected to the galea using Botox, hair loss not only stopped, but actually reversed in many of the male patients. And even more effectively than the typical results expected from using oral finasteride (although more studies would be useful to compare the two treatments directly.) Multiple studies, totaling over 100 patients, have confirmed the same hair regrowth results from Botox injections. (8)(9) The evidence is now overwhelming that the scalp muscles play a role in genetic hair loss, either through causing tension on the galea or constricting blood flow to the upper parts of the scalp. Most likely a combination of both. In the first paper published on using botox for hair regrowth, Dr Freund states: "Mechanistically, the scalp behaves like a drum skin with tensioning muscles around the periphery. These muscle groups... can create a “tight” scalp when chronically active.” 34 “Because the blood supply to the scalp enters through the periphery, a reduction in blood flow would be most apparent at the distal ends of the vessels, specifically, the vertex and frontal peaks." - (those places men lose hair first.) He continues: "Botox “loosens” the scalp, reducing pressure on the perforating vasculature, thereby increasing blood flow and oxygen concentration.” “Blood flow may therefore be a primary determinant in follicular health. Strategically placed Botox injections appear able to indirectly modify this variable, resulting in reduced hair loss and new hair growth." Dr. Zhou, the author of another botox hair regrowth study, notes: “BTA may relax the muscles around the head, increase blood flow and oxygen concentration in the alopecia area, and further 35 inhibit the activation of DHT, ultimately leading to a reduced occurrence of hair loss.” “Moreover, a high concentration of oxygen can stimulate the hair follicle into the growth phase, resulting in hair regeneration" I know it’s a bit of a strange concept, since most people are never even aware of these muscles, let alone that they are constantly pulling down on our galea, but stay with me for a little longer because this is an important point to keep in mind if you want to fix your own hair loss. Another way to relax the galea A similar study was created by leading hair loss researcher Robert English, but instead of using Botox, scalp massages were used to reduce tension throughout the galea by massaging the muscles attached to the scalp perimeter, as well as to help reduce the fibrosis in balding areas. 36 The results were very promising. Just 20-40 minutes of daily scalp massages were enough to halt or even reverse hair loss in nearly 70% of participants. The details differed from one person to the next, but on average, 36 hours of scalp massage were required for the effect to become visible. (10) The conclusion of the scalp massage study was that: "AGA is the result of chronic GA-transmitted scalp tension" (AGA stands for ‘androgenetic alopecia’, another term for pattern baldness. GA stands for ‘galea aponeurotica’) Further, this tension in the galea results in conditions that: "restrict follicle growth space and decrease oxygen and nutrient supply to AGA-prone tissues – leading to tissue degradation, hair follicle miniaturization, and eventually pattern baldness." What is interesting about the results from the massage study is that they were time-dependent. This means the 37 more time spent massaging, the better the regrowth. Once the 36-hour threshold was reached, results kept on getting better and better. This is an important point that we’ll come back to later on. In fact, the case gets even stronger when we see how tension patterns in the scalp correlate with the pattern found in ‘male pattern baldness’. Highest scalp tension areas = first place to lose hair An interesting pattern emerges when we look at mathematical models of tension in the male scalp as described in the following study. Researchers applied their models to estimate the tensile force across the scalp of men. By knowing the shape of the skull, along with the forces pulling the scalp down at the perimeter of the scalp. (11) 38 Here’s the result of those mathematical models of tension in the scalp: What is interesting is that where the models predicted low tension (dark blue areas in this diagram), those are the places where we don’t lose any hair (the sides and back of the head.) 39 The tensile force was highest at the temples and vertex. These are the first places men start losing hair (the lighter blue areas in the diagram above.) Remember that: Scalp tension + DHT + Genetic Predisposition ↓ Dermal Fibrosis ↓ Reduced Blood Supply & Growth Space ↓ Hair Follicle Miniaturization Therefore we can clearly see that high tension in the scalp causes hair loss because the patterns match closely. Everybody has a slightly different skull shape, which is why men often have slightly different patterns. But in general the pattern of hair loss stays approximately the same and is known as the ‘Hamilton-Norwood Scale’. 40 It starts at the front with the temples, and progresses backwards. The crown area is also a high tension area and can start to develop hair loss soon after the temples. The Hamilton-Norwood Scale of Male Pattern Baldness What are the chances that the tensile forces in the scalp just happen to match exactly the pattern of male pattern baldness? It was proven statistically that the chances of this being down to coincidence were less than 1 in 1,000! (11) 41 The authors of the study conclude that: “stress distribution in the scalp determines AGA patterning” Without understanding the role of scalp tension, there was simply no explanation for the pattern found in male pattern baldness. Summary: We’ve seen how reduction of blood supply and growth space of the hair follicle throughout the 3 layers of the scalp causes hair loss. 42 You’ve seen how the galea which overlays the skull is connected to all the other layers. Subsequently, when the galea gets pulled tight it causes tension throughout all the layers of the scalp, restricting blood supply and growth space through layers 3, 2 and 1. In summary, this tension has a ripple-on effect, causing: ● Restriction of blood supply to the upper layers of the scalp ● Fibrosis in the dermis (when DHT is present) because of chronic inflammation ● Inflammation and blocked scalp pores in the epidermis To confirm that scalp tension leads to hair loss we looked at mathematical models of tension in the scalp. The highest tension areas coincided with those areas that lose hair first. The pattern of tension matches the pattern found in ‘male pattern baldness’. 43 The chance of this being a coincidence is statistically 1 in 1,000. The scientific consensus is that genetics plays a role in androgenetic alopecia (male pattern baldness). However, up until recently that statement provided little practical help to balding men. Now we can see that genetics plays a role in the process of dermal fibrosis that takes place via scalp-tension-caused inflammation and DHT, rather than the direct sensitivity of the hair follicle to DHT. This insight gives us more practical ways to stop and reverse hair loss. With a firm grasp of the science behind the root cause of hair loss, we can take a look at the revolutionary 3 Layer System which reverses these processes. 44 In doing so, you’ll discover the most effective way to stop and reverse hair loss, in a way that actually helps fix the cause of the problem like no other treatment does. Since constriction takes place across the 3 scalp layers, we use 3 steps, which correspond to each of the 3 layers of the scalp Each step works well individually, but the power comes when we combine these steps into the 3 Layer System and they begin to work synergistically. 45 Chapter 2: The 3 Layer System In the previous chapter we’ve seen how constriction of hair follicle blood supply and growth space is the real cause of hair loss. Now let's take a look at how to treat this constriction across each layer of the scalp, in order to achieve better hair regrowth. Step 1: The Epidermis For step 1 we use a scalp brush and topical solution that work on Layer 1 of the scalp. The scalp brush helps remove dandruff, sebum, dead skin, and dirt from the hair follicle pore and invigorates the surface of the scalp. 46 Brushing the scalp helps expose the epidermis, so the topical solution can penetrate more deeply (and not just sit on top of the dandruff and sebum where it doesn’t do any good). The correct topical will help to: a) block DHT and prevent fibrosis b) stimulate blood flow through vasodilation (increase in the size) of the capillaries c) reduce inflammation d) trigger the anagen (growth) phase of the hair follicle. 47 I will explain more about the right topical solution to use later on in this chapter. Step 2: The Dermis In this step we need to go deeper than the epidermis, remember the dermis is 0.5mm - 2mm thick. For this layer we use a device called a ‘dermaroller’. This is a simple handheld tool consisting of a rolling drum with 48 dozens of microscopic 1mm needles that is rolled along the balding areas of the scalp. The microscopic needles penetrate into the dermis and activate wound healing to help break down the fibrotic tissue and increase blood capillary networks. This helps increase blood supply and growth space around the hair follicle. It also helps improve the absorption of hair growth topicals. A study from 2017 showed that microneedling was more effective at regrowing hair than using 5% minoxidil. (12) However, the group of participants who used both microneedling and minoxidil together had by far the best results. Although it might sound uncomfortable to use a dermaroller, because the needle size is so small it’s relatively quick, easy and painless. Dermatologists have used dermarollers for decades to reduce the appearance of wrinkles and scars and they are perfectly safe and easy to use. 49 The exact process of how using a dermaroller reduces fibrosis and increases blood supply requires a longer explanation, so a section has been added to the Appendix explaining this process in detail if you are interested. 50 Step 3: The Galea We need to reduce the tension on the galea which is constantly pulling downwards on the entire top of the scalp causing the ‘pattern’ in pattern baldness. Just imagine a swimming cap being pulled down by muscles attached at the forehead, back and sides of the head. As we’ve seen, Botox injections and scalp massages reduce tension in the galea and result in impressive hair growth outcomes. However, Botox injections are very expensive, 51 and can cost anywhere from $500-$1500 per session and require a trip to a clinic. That could add up to $1000-$3000 per year, never mind finding a Botox specialist who will perform this off-label procedure. Scalp massages, on the other hand, although very effective and cheap, are hard work, tiring on your hands and arms and time-consuming. Fortunately there is a much easier option, which involves using a device called a ‘growband’ which is designed to directly reduce muscle contraction and galea tension, whilst activating pressure-induced vasodilation. A growband grips the scalp perimeter and pushes the galea upwards, causing the entire top of the scalp to pinch upwards together, whilst also stretching out the muscles attached to the galea. 52 The growband targets the muscles connected to the galea at the front, back and sides, stretching and massaging them out of contraction and into relaxation. Step 3 reduces galea tension, stimulates blood flow through massage, and reduces constriction of the blood vessels going into the upper layers (dermis, adipose tissue, and epidermis). 53 The 3 Layer System in Practice Hairguard created the 3 Layer System and has perfected a hair care routine that uses this system. Now let’s break down each layer into simple, practical steps. Step 1: Use the Hairguard Scalp Brush to unblock the scalp pores and clean the epidermis plaque, so the topical can penetrate more effectively into the dermis. Brush for 5 minutes in the evening and immediately afterwards apply the Biogaine topical to any thinning or receding areas of hair. Biogaine is our ultimate all-natural hair growth topical. It contains the most potent and effective drug-free hair loss stimulants and DHT blockers available including: ● Caffeine ● Adenosine 54 ● Larch Tree Extract ● Pea Sprout Extract ● Red Clover Extract ● Zinc All of these ingredients have been shown through scientific studies to help with hair growth one way or another. Please visit pro.hairguard.com to learn more about the full list of ingredients and their research. Step 2: Use the Hairguard 1mm Dermaroller to microneedle any areas of the scalp where you want thicker hair. Remember, microneedling helps reverse the process of fibrosis and revascularises the tissue through a process known as angiogenesis. Microneedling is perfectly safe and causes a temporary redness of the scalp for 30 minutes or so after using it. Although dermarolling is mildly uncomfortable, your scalp 55 will quickly adjust and the procedure becomes quick, easy and relatively painless. We recommend doing this 1X per week. (Please note, you should suitably disinfect the dermaroller before using it.) Step 3: Use the Hairguard Growband for 15 minutes per day, to release tension on the galea and lift the entire top scalp upwards. The Growband is designed specifically for releasing tension throughout the galea and helping massage (via scalp pinching) the top of the scalp. Our studies show that after 10 minutes using it, the scalp skin temperature increases, showing an increase in blood flow throughout the dermis. Your scalp will also feel noticeably more relaxed and invigorated after 10 minutes of using the Growband. We recommend using it for 15 minutes per day, but if you want to use it more often that’s also fine. As we’ve seen 56 from the scalp massage study, the longer you massage the scalp the better results you get. This is a really powerful point, because unlike traditional treatments like minoxidil and finasteride which don’t become any more effective the more you use them, the massaging effect from the Growband works in a time-dependent manner. You could happily use it for an hour a day to get even better results. Summary: We know that reduced microvascular blood supply and growth space of the hair follicle, caused by processes taking place across the 3 layers of the scalp, is the true root cause of hair loss. As such, using a 3 Layer System is by far the most effective way to treat hair loss. One step for each of the 3 scalp layers has been described above. By addressing each layer, step by step, we can 57 reverse hair loss by treating it at the root cause rather than using “bandaid-solutions”. In the next chapter I want to explain why this 3 Layer approach turns out to be not just more effective, but a much better long term plan for beating hair loss as well. 58 Chapter 3: Hair That Keeps Getting Better Following the Hairguard 3 Layer System, based on the 3 main layers of the scalp, means you’ll have hair that keeps getting better. By that I mean, thicker, stronger, healthier, and more protected against future hair loss, month after month, year after year. The healthy hair you love and deserve. So why does a 3 Layer treatment mean your hair continues to get better and better over time? Because you’re fixing the problem at the real root cause! This is the big difference between just using a Layer 1 treatment like minoxidil, or a Layer 2 treatment like finasteride. 59 Minoxidil and finasteride don’t fix the root cause. Which is why results typically plateau after a year of use. They work only on Layers 1 and 2 respectively. The 3 Layer System fixes the root cause by reducing scalp tension starting in the galea. As such, the results become “time dependent.” This is an important point, because it means the more time you spend using the Growband, the better the results you will get. Read that again: the longer you use it, the better results you get. Not so with treatments that just target layers 1 or 2 of the scalp. Minoxidil often becomes less effective over time when used by itself. 60 Finasteride users report plateaus in hair growth after 1 or 2 years. That means a small amount of regrowth in year 1 and year 2, followed by maintenance, or even a slow decline. This is still good, because it means you can easily stop further hair loss, but for people looking to grow back more hair, blocking DHT is only 1 part of the equation. And if you ever tried to use more minoxidil or apply it more times per day, or take a bigger finasteride dose, it wouldn’t yield any better results because neither treatments are time or dose dependent. This is because the issue hasn’t been fixed at the root cause. The bottleneck to getting better results is microvascular blood supply, which is still limited across the different layers of the scalp, starting with tension in the galea. So by using the 3-Layer System your hair can keep getting better and better with time. 61 If you want your hair to keep getting better over time, choose a 3 Layer System. In addition, by working on all 3 of the layers, your newly regrown hair will be more protected against future hair loss. It’s well known that if you ever stopped finasteride or minoxidil then you’ll probably lose a lot of the hair you’ve gained fairly quickly. The 3 Layer System stops the cause of hair loss from the ground up by: 62 - Reducing chronic tension in the galea using a Growband (or Botox/scalp massages) - Reversing fibrosis in the dermis using a dermaroller and blocking DHT in the scalp topically - Stopping inflammation and unblocking the hair follicle pores in the epidermis with the scalp brush and topical solution Results you get from the 3 Layer System are more protected against future hair loss, and can lead to fuller recoveries over time. Summary: By addressing the real cause of hair loss across the 3 layers, your hair can continue to improve in a time-dependent manner over the long term. This is in contrast to Layer 1 or 2 treatments where results typically plateau or even diminish within 6 - 24 months after starting them. 63 Therefore, the longer you utilise the 3 Layer System of: - Brush scalp for 5 minutes, then apply the Biogaine hair growth topical - Use 1mm Dermaroller (1x per week) - Use a Growband (15 minutes per day) ...the more regrowth you will experience. This could never be achieved with treatments that only work on layer 1 or 2 because they don’t fix the real cause of hair loss in the first place. 64 Chapter 4: My Journey In 2012 I graduated from the University of Birmingham in the UK with a Master’s degree in Chemical Engineering. I was also rapidly losing my hair at just 22 years old. I knew that losing hair at such a young age is a sign of more aggressive male pattern baldness and things were not looking good for me if I did nothing. My father is bald, my uncle is bald, and both of my grandfathers were bald as well, so it was pretty much inevitable that by age 30 I would be well on my way to advanced stage hair loss. But I wasn’t ready to give up just yet. I started researching male pattern baldness and writing about what I had discovered on my blog. 65 I was reading and writing a lot, but honestly, I was more confused than ever. During that time I tried oral finasteride (1mg) and for a while it seemed to slow down my hair loss. However, after I experienced sexual side-effects, I decided not to use oral finasteride again, and to try and find a better way to treat my hair loss. Some people have said my side-effects were due to a ‘nocebo’ effect where the patient believes they are experiencing something because they’ve already been told that side-effects can be common. However, for my situation this wasn’t the case because I didn’t connect my side-effects with finasteride until I later made the connection after the side-effect had taken place. I am not saying that oral finasteride is a bad idea for everyone. Clearly it can work well and without side-effects for many men and is still considered the ‘gold standard’ hair loss treatment after 20 years and is a powerful and incredibly useful drug. But for my situation, it wasn’t the right option. I had bad side-effects and it wasn’t even very effective for me. 66 (Men taking oral finasteride can combine this treatment with the 3 Layer System to achieve even better results.) Still, my curiosity spurred me on to try and find the deeper cause of hair loss. From 2013 - 2015 my hair continued to get worse. At one point I was ready to give in. I shaved my head, stopped researching and writing about hair loss, and tried to stop worrying about my hair and accept that I’d just have to try and look good bald. I don’t have many photos from that time because my self-confidence was so low, but I managed to find a couple from friends’ old albums. 67 This is a bit of a strange photo, because it’s a double exposure photo, however I think it’s worth sharing here as it is the best angle and haircut to show the extent of my hair loss. Remember this was a time in my life when I was very shy of having photos taken. Hence my somewhat surprised expression in this photo. You can see the advanced hairline recession and thinning on top. 68 Although I had basically given up and tried to stop thinking about hair loss and worrying about my own hair, I still had nagging questions about the root causes of hair loss. During that time from 2015-2017 I focused on improving my health, removing chemical-laden shampoos from my bathroom, using shower filters (there was very hard water where I lived) and reducing my stress levels. It seemed to help slow down the rate of thinning and recession, but I was still just barely holding on to what I had. Then I became fascinated by the anatomy of the scalp, and combined this knowledge with all the latest hair loss studies and the pioneering work of hair loss researchers like Robert English, whose research on scalp tension and dermal fibrosis has been referenced throughout this book. Follow-up Botox studies showed definitively that scalp tension and microvascular blood supply played a role in hair loss. 69 With this insight, and a clear understanding of the anatomy of the scalp, this led me down the path to create the 3 Layer System. I also wanted to be able to share this information with as many people as possible so that I could help them fix their own hair loss problems, which is why I decided to launch the Hairguard business. Doing so meant that I could build a team to help develop products designed to treat each of the 3 layers specifically, with the aim of creating the most effective yet straightforward system out there. As soon as I started using the 3 Layer System and the new Hairguard products, I knew we’d found the most effective way I’d ever seen to regrow hair. I’d gone from rapidly losing my hair at age 24, to finally stabilizing the hair loss but barely holding on to it. 70 Then, with the 3 Layer System, finally I was seeing visible improvements in my hair thickness and coverage. I could grow my hair longer and it still held its shape and looked thick, even when wet. My scalp which was visible before under harsh lighting became less and less obvious as it became covered in thicker and thicker hairs taking up space. One friend who hadn’t seen me in a year asked if I’d had a hair transplant. Friends and family started commenting that my hair looked great and that I looked younger, healthier and happier. Look, my hair is far from perfect, but if you look at how rapidly I was losing hair at age 24, and how far back my hairline was at that young age, I’m so grateful I’ve managed to stop further hair loss whilst improving the health, thickness and strength just by using the 3 Layer System. And the best thing is, things are getting better every 6 months because of the power of reducing the tension with the Growband. 71 The Botox study referenced earlier showed how relaxing the scalp can almost double the performance of finasteride, and microneedling studies have shown you can 3X the performance of minoxidil. That’s why if you want to use minoxidil and/or finasteride it’s best to use them as part of the 3 Layer System. I’ve finally found something that’s worked so well for me, when nothing else did, even after years of trying. I’m so excited and honoured to share it with you. Please feel free to reach out and shoot me an email to will@hairguard.com if you have any questions. Thank you. 72 Got Questions? If microvascular blood supply to the dermis is so important, why do some men with good cardiovascular health still go bald? Actually, numerous studies report a link between male pattern baldness and metabolic syndrome, heart disease, hypertension and obesity. In other words, men with pattern hair loss are disproportionately likely to also have one of these serious health conditions, all of which are linked to poor circulation. Depending on the study, the risk can be as much as double, compared to non-balding men. Does that mean that all men with hair loss have these problems, and that men with perfect cardiovascular health cannot go bald? Of course not. Though there is a link between general blood flow and hair loss, what is really important is the quality of blood supply to the dermis. And blood flow at the scalp is primarily determined by the degree of microvasculature supply, scalp tension and fibrosis. 73 The local microvasculature supply to the top of the scalp is determined far more by local factors such as the galea, muscles attached to the galea and the skull, rather than non-local factors such as general cardiovascular health. This has been demonstrated time again by Botox and massage studies showing that reducing tension and increasing blood supply improves hair growth outcomes. Think of it like a garden hose pipe. If there’s a kink in the hose, it doesn’t matter if you increase the water pressure by 10% (peak cardiovascular fitness) the amount of water dripping out of the end will still be very small because of the kink. If I were to cut my bald scalp it would still bleed, doesn’t this show it still has adequate blood flow? Your scalp will always bleed, even if you are completely bald. Blood flow is never impaired to the degree that blood stops flowing completely. This would quickly lead to 74 gangrene and if left untreated would cause death of the individual. The reduction in blood flow is mild, and in its wisdom the body prioritizes the limited blood to maintain essential structures. The hair follicles are not essential to survival, but it will still take years for them to miniaturize and die. Studies have shown balding scalps have lower blood flow and more fibrosis, but this doesn’t mean there’s no blood in the scalp at all. Shouldn’t blood pressure medications help fix hair loss, since they improve blood flow? Actually, they do. Minoxidil - the most widely used hair loss topical treatment in the world - is an FDA-approved anti-hypertensive (in other words, a medication that reduces high blood pressure). It achieves this by widening the blood vessels, which then allows more blood to flow through them. When taken orally, minoxidil leads to hair regrowth not just on the scalp, but all over the body. 75 Again, keep in mind that local factors which affect blood flow to the top of the scalp have a much larger impact on hair growth outcomes than factors such as blood pressure and cardiovascular health which are systemic factors. How sure are we that scalp tension causes hair loss, and isn’t just correlated to it? The scalp tension pattern found in a computer model was highly correlated with the Norwood-Hamilton Scale. The author of the study calculates the statistical probability being down to chance is 1 in 1,000. (11) Given what we know about scalp tension leading to inflammation and then dermal fibrosis in the presence of DHT, the scalp tension models make perfect sense. We also see that male pattern baldness takes place only over the galea. 76 Why do men lose hair in slightly different patterns? The Norwood-Hamilton Scale is universally accepted as the way in which male pattern baldness progresses. Yet some men will vary in the exact pattern that their hair loss progresses. For example, some men have more crown thinning than others. There could be a number of reasons for this variation, however this is an area where more research is needed to more accurately determine the causes of the variation. Some men who suffer from pattern baldness also have a hair shedding disorder at the same time. This can cause a more diffuse hair loss pattern. If you find you have a lot of thin hair and a less obvious pattern, it is worth remembering that treatments for male pattern baldness do not necessarily work for hair thinning disorders such as telogen effluvium. 77 There can be a number of causes of hair thinning disorders such as stress, nutrient deficiencies, heavy metal toxicity, hyperthyroidism and more. The other possible reasons that cause subtly different hair loss patterns could be skull shape and differences in blood supply, although more research is needed in this area. To put it simply, variations in hair loss patterns are caused by the addition of hair thinning disorders and/or individual variations in tension patterns and microvascular blood supply throughout the scalp. Isn’t low blood flow and low oxygen levels a consequence of hair loss, rather than a cause? In this book we’ve referenced studies showing that balding areas of the scalp have lower blood flow, lower oxygen concentration and higher collagen deposits than non-balding areas. 78 In principle, one could argue that these differences are the consequence, not the cause of pattern hair loss. However, the conventional, widely-accepted model of androgenetic alopecia (AGA) cannot account for this reduced blood flow. According to this conventional model, DHT attaches to receptors inside the hair follicle, and then triggers genetically predetermined pathways inside the follicle that lead to its miniaturization and eventual death. There is nothing in this process that could lead to the observed reduction in blood flow, not to mention the extensive perifollicular fibrosis. What if I stop using the Hairguard System? The beauty of the 3 Layer System is that it helps fix hair loss at the root cause, and therefore your hair is more protected against future hair loss. It is also easier to maintain your healthy hair once it has regrown than it is to regrow it in the first place. So once 79 you’ve achieved a level of regrowth you are happy with you may be able to continue with just scalp brushing or using the Growband infrequently to maintain what you have. Just like brushing your teeth keeps your mouth healthy, brushing your scalp and using the Growband helps keep your hair healthy, though what you need to maintain your hair varies for everyone depending on the severity of the hair loss. The main point is that you will need to deal with either the scalp tension, or the DHT in your scalp, to maintain your hair. If not, you’ll steadily lose what you’ve regrown over time. Although the Growband does help reduce scalp tension, this isn’t necessarily a perfect long term solution as the muscles can begin to tighten up again. However it’s probably true that less use of the Growband is needed over time. Once the muscles have been stretched 80 out they are unlikely to return all the way to their previously contracted state. Does the 3 Layer System work for women? Although the 3 Layer System has been designed for male pattern baldness, it actually works incredibly well for women too. Although DHT plays less of a role because it’s found in much lower levels in women, female pattern baldness is also caused by reduced growth space and blood supply to the hair follicles, so the 3 Layer System will still be effective at reversing hair loss in women. Can I use the Hairguard System without the Growband? Yes, you can use the Hairguard 3 Layer System without the Growband and still achieve excellent hair regrowth. 81 If you don’t want to use the Growband at this time, instead we recommend using the Scalp Brush to massage the scalp. You can also do manual scalp massages with your hands. Your hair care routine must deal with the scalp tension (Layer 3) to some extent to be successful in the long term. As an example, let’s say Ben uses the full 3 Layer System with the Growband. Or he uses manual scalp massages, or receives a Botox treatment. Essentially, Ben makes sure he reduces the scalp tension in some way. Jerry decides to go for only steps 1 and 2 (layers 1 and 2 of the scalp.) After 6 months, Ben and Jerry may have achieved similar results in terms of hair regrowth. However, after the first 6 month period, Ben would most likely start to pull away from Jerry and achieve better results from there onwards. 82 For Jerry, the chronic scalp tension and reduced blood supply remains and therefore limits his recovery going forward from the 6 month period. If both Ben and Jerry stopped all hair loss treatments, it is more likely that Ben would keep his new hair for longer as well. Some people choose to go for steps 1 and 2 initially and then come back and order the Growband at a later date. The Growband comes with our 12 month money-back guarantee so there’s absolutely no risk to you if you decide to try it. It makes most sense to go for the full 3 Layer System knowing your Growband purchase is completely risk free. Is using a dermaroller painful? Using a dermaroller dermatologists have is mildly used uncomfortable, cosmetic yet microneedling treatments for over a decade with great success. Your scalp 83 will adjust over time to the sensitivity, so just keep in mind the first time you try dermarolling will be the most uncomfortable time. Microneedling is an important part of the system because it actively helps reverse fibrosis and also helps with the absorption of the topical into the dermis. Personally, I just spend 10 - 15 minutes per week in the evening when going over my entire scalp. It doesn’t take long and any irritation quickly subsides. Once you’ve reached your hair goals, and if you’ve removed the chronic scalp tension by using the Growband, and blocked DHT using our topical products, you may not even need to use a dermaroller anymore as the fibrosis will have been dealt with. 84 When should I expect to see results? Hair regrowth takes time so it’s important to stay patient. Most of our clients see visible results within 3 months, however sometimes it can take longer. Hair goes through phases so at the initial stage of the 3 Layer System the hairs will be transitioning to the growth phase which takes some time before the hair itself actually starts growing. Remember, your hair can be thickening and improving without it being necessarily visible to start with. The 3-6 month period is when many of our clients see their biggest improvements as the scalp tension and fibrosis reduces and microvascular blood supply increases throughout the entire scalp. When using the 3 Layer System your hair will be getting thicker before it’s noticeable. It may take a hair cut to reveal the new thickness of your hair. 85 Although the 3 Layer System can work faster than traditional treatments, the power of the system comes at the 6-12 month mark as tension decreases and blood supply increases from the 3rd layer up. Which topical should I use? When implementing the 3 Layer System it is key to use the correct topical since it should perform many functions, such as helping to block DHT and triggering the anagen (growth) phase of the hair follicle. We designed Biogaine to do exactly that, plus more. In fact, Biogaine is by far our most advanced and sophisticated formulation, containing a wide range of ingredients that you won’t find anywhere else. We strongly believe Biogaine is the best all-natural hair growth topical on the market, making it the perfect choice for use in the 3 Layer System. Biogaine is suitable for men and women, and because it does not contain any drugs, the chances of even mild side-effects are very rare. 86 How often should I apply Biogaine? We recommend applying Biogaine once per day. The ideal time is to apply it in the evening around 1 hour before bedtime, straight after using the Scalp Brush. Biogaine needs around 30 minutes to properly dry and therefore it is better not to apply it right before going to bed. The longer the solution is in contact with the scalp the more effective it is. Ideally leave Biogaine in for 24 hours before washing out. Will the 3 Layer System cause hair shedding? Hair shedding may occur in some cases, however this is nothing to worry about and is actually a good sign in most cases, as it shows the hair follicles in the resting phase are being replaced by hair follicles in the growth phase which can grow back thicker and stronger than the follicle before it. 87 In a lot of cases, those with an obvious amount of hair shedding at the start of the treatment are also the ones who achieve quicker results. Shedding periods can last from a few days up to a few weeks. In the very unlikely event you have severe shedding then please contact our support team where we will provide help and feedback. Can I use the Growband by itself? The Growband is effective by itself but works much better when combined with steps 1 and 2. Clients who use only the Growband typically have much slower regrowth rates than clients who use the full 3 Layer System because the topical actively stimulates new growth, whereas the Growband works by removing the root cause of the hair loss. 88 Therefore it is highly recommended to use Growband as an adjunct treatment alongside steps 1 and 2. If you’re already happy with hair and simply want to protect against future hair loss then the Growband alone may be a suitable option. Are there any side effects? Since Biogiane does not contain any drugs the chance of even mild side effects is very rare. What size is the dermaroller? The Hairguard System uses a 1mm dermaroller. The needle size is based on a number of studies that used this length and achieved excellent results. There are yet to be any studies comparing the dermaroller needle size and their respective effectiveness and therefore 1mm is considered the most effective size when used in combination with a hair growth topical. 89 I have long hair, can I still use the scalp brush and dermaroller? If you have long hair it may take you slightly longer to use the scalp brush and dermaroller. You’ll simply need to be more careful not to pull out any hairs whilst doing so. However, it’s still totally possible and important to use both the scalp brush and dermaroller even with long hair. Does the Hairguard System work for all types of hair loss? No, the Hairguard System is designed only for male and female pattern baldness (androgenetic alopecia). The system is not suitable for telogen effluvium, alopecia areata or other less common forms of hair loss. Where do you ship? We ship to the US, Canada, Europe, Australia and New Zealand. How does Biogaine compare to other topicals? 90 Biogaine is probably the best all-natural hair growth topical on the market. The reason we can say that so confidently is that for the last four years Hairguard has been researching, developing and refining the formulation, with the result being that Biogaine is by far the most effective natural product available. In fact, when we began developing Biogaine, we first started by asking ourselves a simple question: “If cost wasn’t an issue, what would the best non-medicinal hair growth product look like?” The result is Biogaine, and it has exceeded our expectations. Far from being a weak hair growth topical as you might expect, Biogaine rivals and even exceeds regular minoxidil thanks to its exhaustive list of superior (and in some cases patented) ingredients that target hair regrowth from multiple angles to make it as effective as possible. No expense has been spared in the Biogaine formulation. 91 Bonus Section Do hair transplants prove that scalp tension does not cause hair loss? We’ve seen how reduced hair follicle growth space and blood supply (in the 3 main layers of the scalp) causes hair loss. However, hair transplants represent the main counterargument to this theory. If hairs can be transplanted from the back of the head to the front (into balding areas) and continue to survive, this would prove that the hair follicle itself is genetically sensitive to DHT, and this sensitivity is the deciding factor of whether the follicle lives or dies, rather than the scalp environment surrounding the follicle. 92 Let’s call these two sides of the argument: ● “Scalp environment dominant”- Reduced hair follicle blood supply and growth space causes hair loss. (This is the argument we present in this book.) ● “Hair follicle dominant” - Hair follicle’s genetic sensitivity to DHT causes hair loss. To put it another way, here are the two sides of the argument: 93 The Hair Follicle Dominant Argument vs. The Scalp Environment Dominant Argument 94 I want to address the ‘hair follicle dominant’ side of the argument, and then show how it falls apart under closer inspection. In doing so, you’ll realise why the hair follicle dominant argument has stifled progress of new hair loss treatments since the theory came around: because it places emphasis on the hair follicle itself, rather than taking a deeper look at the scalp environment surrounding the follicle. Hair transplants and the Hair Follicle Dominant argument The hair follicle dominant theory suggests the hair follicle itself determines whether it lives or dies due to genetic sensitivity to DHT and the scalp environment is practically irrelevant to hair health. Scientists took healthy hair follicles from the back of the head (donor area), and transplanted them into balding areas at the front of the head (recipient area). 95 This is known as a hair transplantation procedure. If the scalp environment really did affect the hair follicles, then those hairs transplanted from non-balding areas to balding areas would surely start miniaturizing as well. If the hair-follicle-dominant argument was correct, those transplanted hairs would continue to live on (because they aren’t genetically sensitive to DHT, the argument goes). In a study from 1959, researchers did exactly that and the transplanted hairs continued to grow as normal. (13) They didn’t miniaturize and they didn’t fall out for the entirety of the study. This allegedly proved that the scalp tissue environment (across the 3 layers of the scalp) was completely unimportant when it came to the hair loss. All that mattered (the researchers concluded), is the local hair follicle sensitivity to DHT which was genetically predetermined. 96 This gave birth to the hair follicle dominant argument, which forms the basis of modern hair transplants. In fact, thousands of people each year get hair transplants, taking healthy hairs from the back, and transplanting into balding regions where they continue growing healthily. This clearly shows the hair follicle dominant argument must be correct, and disprove that blood supply and growth space plays a role in hair loss, right? This goes against exactly what we’ve been talking about in this book. So how can this be? Well there are some crucial parts of the hair transplant studies that didn’t receive the proper attention. Firstly, during the initial studies on hair transplantations, the researchers didn’t take single hairs from the back and transplant them into the front. In fact, what they took were 97 6-12mm punch biopsies with a large amount of surrounding tissue. Here’s an example of a punch biopsy from the scalp. It contains the the hair follicles and all the surrounding tissue and blood supply from the dermis: These grafts were moved together from the back to the front and continued to grow healthily for the remainder of the 2.5 year study. 98 The problem here is, the study looked at a chunk of the scalp environment, rather than a singular hair follicle. Each 6-12mm punch biopsy contained a large number of hair follicles (more than 10). This is a really important distinction because the healthy scalp tissue environment is also being transplanted, not just the follicle by itself. Subsequent hair transplant studies actually show that graft survival rate is dependent on the number of hair follicles, and the amount of surrounding tissue taken with each graft. Bigger grafts with more tissue have a higher survival rate. 99 Clearly the tissue surrounding the hair follicle is important to whether the hair follicle lives or dies. So how about all the hair transplants that are taking place each year and still look great years later? Firstly, almost all hair transplant patients are required to take finasteride. As we now know, finasteride blocks DHT, which then stops the process of dermal fibrosis from taking place which would restrict blood supply and growth space. This means we can’t include those patients in the hair-follicle-dominant argument, because DHT has been removed from the equation, thereby rendering the ‘DHT sensitivity’ argument obsolete. However, in the few cases when hair transplant patients don’t take finasteride, those transplanted hairs do eventually start thinning. It just takes 5, 10 or even 15 years before the scalp environment surrounding the transplanted 100 hair follicle changes enough due to fibrosis to start constricting hair growth space and blood supply and causing miniaturization. Remember, fibrosis is a slow process and takes place over many years, even decades. It took many years for these patients to start losing their hairs in the first place. Similarly, it takes many years for them to begin losing their newly transplanted hair. Think of it like resetting a countdown timer in the hair follicle. Some researchers have called this the hair follicle’s “balding clock.” Think of it as a clock that starts when the hair gets transplanted into a scalp environment under tension, in a patient who isn’t blocking DHT. Summary Hair transplants present the strongest counter-argument to the idea that reduced blood supply and growth space 101 causes hair loss, by showing that hair follicles are genetically predestined to live or die due to genetic sensitivity to DHT. But a closer look reveals that even transplanted hairs are (eventually) affected by the scalp environment and start to miniaturize (if the patient doesn’t block DHT or reduce scalp tension). It just takes time for the surrounding tissue of the transplanted hair to feel the effects of scalp tension and for constriction to take place around the hair follicle due to dermal fibrosis. Consequently, hair transplants show all hair follicles do eventually miniaturize from fibrosis caused by scalp tension; it just takes time. This proves that the scalp environment plays the defining role in causing male pattern baldness. To put it another way, in a patient who doesn’t block their DHT, the transplanted hairs which do eventually start 102 miniaturizing would still be growing perfectly healthily, had they remained at the back of the head where tension is low. Just look at celebrities like Joe Rogan who didn't take finasteride after having a hair transplant. That transplanted hair is now essentially gone, yet the hair on the back of his head still persists long after his transplanted hair has fallen out. I know in this chapter we’ve gone deep into the science surrounding the causes of hair loss. It is important to clarify why the reduction of the microvascular blood supply and growth space is the real root cause of hair loss, so that we can understand how best to treat it. We’ve looked at the strongest counter-argument, and then seen how it doesn't hold up upon closer inspection. A treatment that works across the 3 layers of the scalp is the best solution for blood flow and growth space constriction, because it fixes hair loss at the real root cause. 103 Consequently, as explained in the previous chapter, your hair can continue to improve in a time-dependent manner, rather than reaching a plateau after a year or so, as happens with traditional 1-Layer treatments. 104 Appendix Why DHT + scalp tension causes dermal fibrosis DHT is an anti-inflammatory molecule. For example, when you suffer a wound, DHT modulates your body’s inflammatory response. DHT has also been found to act as an anti-inflammatory in the prostate, as well as in other instances of inflammation like gingivitis. When the scalp is pulled tight, it creates the chronic low-grade inflammation we discussed earlier. In response to this inflammation, DHT is then activated in the tissues. In tissues under tension, and in the presence of DHT, a signalling protein called transforming growth factor beta-1 (TGFβ-1) is induced. This protein plays countless different roles in our bodies and has unsurprisingly been the subject of literally thousands of scientific articles. 105 But what researchers have generally overlooked is its connection to hair loss. And in particular its potential to induce fibrosis in the scalp. You see, whenever TGFβ-1 is overexpressed in a tissue, it leads to progressive and eventually irreversible fibrosis. The scalps of balding men are just another example of this fibrosis process. Fibrosis is the reason why men with advanced stage male pattern baldness get shiny scalps, and why hair loss is so hard to reverse. Not only do you need to reduce the cause (the scalp tension) but you also need to reverse the fibrosis for the hairs to be able to regrow. To recap, chronic tension in the scalp causes inflammation. In response to this inflammation DHT is then activated, inducing in turn the overexpression of TGFβ-1. The result is progressive remodelling of the scalp tissue in the form of fibrosis. The more advanced the fibrosis, the more microvascular blood supply in the scalp is restricted, and the less space there is for the hair follicles to grow. The results from men 106 who take finasteride show that blocking DHT can stop further hair loss and regrow a small amount of hair. But blocking DHT cannot lead back to a full head of hair for a simple reason: even if you removed every last molecule of DHT from the body, the fibrosis that already exists would not be corrected one bit. This explains why blocking DHT stops hair loss, but doesn’t completely reverse it. How microneedling with a dermaroller helps reverse fibrosis and increase blood supply The practice of microneedling was discovered by plastic surgeons fairly recently, in the 1990s. An important complication of plastic surgery are the scar tissues after the operation. These are instances of large-scale fibrosis that are visible to the naked eye and often irreversible. A hallmark of these post-surgical scars is the absence of hairs and pigment. Back in the 90s, plastic surgeons used tattoo guns to inject artificial pigment into the scars but noticed that after some time the mechanical punctures 107 caused by the tattoo guns led the body to a) re-pigment the scars naturally and b) grow back hair! This observation led to the field of microneedling as we know it today. Its most common application is the treatment of scars, be they acne scars, burn scars or stretch marks. Microneedling mechanically breaks down the fibrotic scar tissue and at the same time prompts a healing wound response through the release of growth factors and cytokines. The end result is healthy tissue regeneration, including new hairs. Though it is useful in its own right, microneedling becomes even more effective when combined with a topical product. The tiny holes created by the dermaroller allow the enhanced penetration of the topical, leading to far better results. In the case of hair loss, the most commonly used topical is minoxidil or minoxidil-containing formulations. Minoxidil is a potent vasodilator, meaning it enlarges the blood vessels, which allows more blood to flow to the follicles. And it is almost certain that microneedling 108 dramatically enhances minoxidil’s vasodilatory effects: clinical studies show that adding weekly microneedling sessions to daily minoxidil results in a 4x increase in hair regrowth! In other words balding men who combine microneedling with minoxidil get four times the results they would get through applying minoxidil on its own. 109 Acknowledgments Robert English from Perfect Hair Health is a leading hair loss researcher and medical editor, and much of the information presented in this book is based on his work. Not only has Robert pieced together study after study into a coherent model and theory of the constriction of blood flow and growth space related to hair loss, but his work on scalp massages as a treatment for hair loss resulted in the study that was referenced in Chapter 2. It is highly recommended to follow along with his work. We have the hard work of researchers and scientists worldwide to thank for their studies which contributed to the ideas we explain here. The 3 Layer System is born out of the results from these studies. 110 References 1. TJ Franz, 1985, “Percutaneous absorption of minoxidil in man” 2. H. Kato et al., 2020, “The Effects of Ischemia and Hyperoxygenation on Hair Growth and Cycle” 3. BE Goldman et al., 1996, “Transcutaneous PO2 of the scalp in male pattern baldness: a new piece to the puzzle” 4. P. Klemp et al., 1989, “Subcutaneous Blood Flow in Early Male Pattern Baldness “ 5. CH Won, 2008, “Dermal fibrosis in male pattern hair loss: a suggestive implication of mast cells” 6. KD Kaufman et al., 1998, “Finasteride in the treatment of men with androgenetic alopecia” 7. BJ Freund, 2010, “Treatment of male pattern baldness with botulinum toxin: a pilot study” 8. Y Zhou et al., 2020, “Effectiveness and Safety of Botulinum Toxin Type A in the Treatment of Androgenetic Alopecia” 111 9. S. Singh et al., 2017, “A Pilot Study to Evaluate Effectiveness of Botulinum Toxin in Treatment of Androgenetic Alopecia in Males” 10. RS English, 2019, “Self-Assessments of Standardized Scalp Massages for Androgenic Alopecia: Survey Results” 11. R. Tellez-Segura, 2015, “Involvement of Mechanical Stress in Androgenetic Alopecia” 12. L. Bao et al., 2017, “Randomized trial of electrodynamic microneedle combined with 5% minoxidil topical solution for the treatment of Chinese male Androgenetic alopecia” 13. N Orentreich, 1959, “Autographs in alopecias and other selected dermatological conditions” 112