The biology of hair care.

Most hair damage occurs as a result of grooming habits and chemical exposure for cosmetic purposes. An evaluation of hair structure and biology points to the need for better protective mechanisms from cuticular damage and UV damage to maintain the cosmetic value of the hair. Through the cooperative efforts of dermatologists and cosmetic chemists, better hair care products can be developed. The dermatologist needs to elucidate the mechanism through which products can enhance hair shaft functioning, whereas the cosmetic chemist needs to identify substances and develop formulations to accomplish the desired end.