Hair is the subject of this book, including the anatomy of the hair follicle, developmental stages, analyzed by light and electron microscopy, hair ultrastructure, nerve and blood supply, specialized hairs and hair organs, and a review of the present techniques to cultivate hair follicle cells in vitro. In the clinical part several chapters describe the most important diseases and possibilities for treatment. Hair care products and their toxicology are the subject of further sections. Extensive reviews of the antiandrogens, a most important group of drugs influencing hair growth, and of their clinical use in conditions such as androgenetic alopecias and hirsutism are included as well. Finally, surgical techniques for hair transplantation are discussed. This book is a standard textbook for everything pertaining to hair under normal and pathological conditions.