Milady's Standard Cosmetology
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Cosmetology: Skin Structure & Growth Milady’s Standard Cosmetology MILADY’S Standard COSMETOLOGY Instructor Support Slides “Disciplining yourself to do what you know is right and important, although difficult, is the high road to pride, self-esteem, and personal satisfaction” Brian Tracy MILADY’S Standard COSMETOLOGY Instructor Support Slides Objectives • Describe the structure and composition of the skin • List the functions of the skin MILADY’S Standard COSMETOLOGY Instructor Support Slides Anatomy of the Skin • Dermatology • Dermatologist • Esthetician MILADY’S Standard COSMETOLOGY Instructor Support Slides Histology of the Skin • Largest organ of the body • One of the most important body organs MILADY’S Standard COSMETOLOGY Instructor Support Slides Skin Specifics • The skin of a typical 150 lb. man would: – Cover 2 square yards – Weigh about 9 pounds • Skin protects muscles, bones, nerves • Skin is a barrier against environment • Eyelids have thinnest skin • Soles of feet are thickest • Continued pressure causes callus MILADY’S Standard COSMETOLOGY Instructor Support Slides Healthy Skin • • • • Slightly moist Soft and flexible Smooth and fine-grained texture Possesses slightly acid reaction MILADY’S Standard COSMETOLOGY Instructor Support Slides Appendages of the Skin • Hair • Nails • Sweat and oil glands MILADY’S Standard COSMETOLOGY Instructor Support Slides Two Divisions of Skin • Dermis • Epidermis MILADY’S Standard COSMETOLOGY Instructor Support Slides Epidermis • • • • • Stratum germinativum Stratum spinosum Stratum granulosum Stratum lucidum Stratum corneum MILADY’S Standard COSMETOLOGY Instructor Support Slides Dermis • Papillary layer • Reticular layer • Subcutaneous tissue MILADY’S Standard COSMETOLOGY Instructor Support Slides How Skin Is Nourished • Blood supplies nutrients • Lymph removes toxins and cellular waste • Arteries and vessels reach hair papillae, hair follicles, and skin glands MILADY’S Standard COSMETOLOGY Instructor Support Slides Nerves of the Skin • Motor nerve fibers • Sensory nerve fibers • Secretory nerve fibers MILADY’S Standard COSMETOLOGY Instructor Support Slides Skin Color • Melanin – Pheomelanin – Eumelanin • Hereditary MILADY’S Standard COSMETOLOGY Instructor Support Slides Skin Strength and Elasticity • Collagen • Elastin MILADY’S Standard COSMETOLOGY Instructor Support Slides Glands of the Skin • Sudoriferous glands (sweat) • Sebaceous glands (oil) MILADY’S Standard COSMETOLOGY Instructor Support Slides Functions of the Skin • • • • • • Protection Sensation Heat regulation Excretion Secretion Absorption MILADY’S Standard COSMETOLOGY Instructor Support Slides Vitamins and Supplements • Vitamin A: Supports overall health • Vitamin C: Known as ascorbic acid MILADY’S Standard COSMETOLOGY Instructor Support Slides Vitamins and Supplements • Vitamin D: Best source is sunlight • Vitamin E: Known as tocopherol MILADY’S Standard COSMETOLOGY Instructor Support Slides Water and the Skin • Comprises 50% to 70% of body weight • Sustains health of cells • Aids in elimination of toxins and waste • Helps regulate body temperature • Aids in proper digestion MILADY’S Standard COSMETOLOGY Instructor Support Slides Consumption and Dehydration • Divide body weight by 16 • Result = Number of 8oz glasses of water needed daily • Dehydration slows metabolism • Water consumption reduces hunger pangs • Lack of water causes fatigue • 2% drop can trigger fuzzy memory MILADY’S Standard COSMETOLOGY Instructor Support Slides Summary and Review • Briefly describe healthy skin MILADY’S Standard COSMETOLOGY Instructor Support Slides Summary and Review • Name the main divisions of the skin and layers within each division • How is the skin nourished? • List the three types of nerve fibers found in skin MILADY’S Standard COSMETOLOGY Instructor Support Slides Summary and Review • What is collagen? • Name two types of glands contained in skin and describe their functions • What are the six important functions of the skin? • Define dermatology MILADY’S Standard COSMETOLOGY Instructor Support Slides Congratulations! You’ve just completed one unit of study toward program completion!
