chapter 1 Hair Structure, Function, and Physicochemical Properties / chapter 2 The Hair Follicle: Structure and Function / chapter 3 Scalp and Hair Hygiene: Shampoos. Bernard Beauquey -- chapter 4 Hair Care Products / chapter 5 Temporary Restyling of the Hair / chapter 6 Permanent Waving and Hair Straightening / chapter 7 Hair Bleaching / chapter 8 Hair Coloring: Non-Oxidation Coloring / chapter 9 Oxidation Coloring / chapter 10 Toxicology of Hair Dyes / chapter 11 Hair Product Safety / chapter 12 Evaluation of Product Efficacy / chapter 13 The Regulation of Cosmetic Products / chapter 14 Skin Tests / chapter 15 Adverse Reactions to Hair Products / chapter 16 Occupational Disorders in Hairdressers / chapter 17 Hair Shaft Abnormalities / chapter 18 The Hair Pigmentation Unit and Hair Graying / chapter 19 Alopecia. P. Reygagne and O. de Lacharrie`re -- chapter 20 Seborrhea. Claudine Pie´rard-Franchimont and Ge´rald Pie´rard-- chapter 21 Dandruff (Pityriasis Capitis Simplex): Of Yeasts and Men / chapter 22 Dermatitis and Eczema of the Scalp / chapter 23 Scalp Dermatoses / chapter 24 Hair Transplantation. Pierre Bouhanna -- chapter 25 Hair: A Psychoanalytical Perspective