Hair Care Cosmetics: Functions and Ingredients of Shampoos, Rinses, and Hair Growth Promoters

The document from 1997 provides a comprehensive overview of hair care cosmetics, detailing the functions and ingredients of shampoos, rinses, one-step shampoos, and hair growth promoters. It explains that shampoos clean hair by using surfactants to remove dirt and that their lathering ability is important for user experience but not necessarily indicative of cleansing power. Rinses are used after shampooing to improve hair condition by smoothing the hair surface and reducing static electricity. One-step shampoos offer convenience by combining shampoo and rinse functions. Hair growth promoters are applied to the scalp to enhance hair follicle function and prevent hair loss, with a growing demand due to societal aging. The document also discusses the evaluation of hair growth promoters through various methods, including animal studies and human testing. Additionally, it covers the categorization of hair growth phases, the measurement of 5α-reductase activity, and the success in culturing hair follicle cells. The document emphasizes the need for scientific evidence to support the effectiveness of hair growth promoters and provides examples of their formulas.