The biology of hair care

Most hair damage results from grooming habits and chemical exposure for cos metic purposes. An evaluation of hair structure and biology points to the n eed for better protective mechanisms from cuticular and UV damage to mainta in the cosmetic value of hair. This article discusses the cooperative roles of the dermatologist in elucidating the mechanism by which products can en hance hair shaft function, and the cosmetic chemist in identifying substanc es and formulations that accomplish the desired results.