Hair Care and Cosmetics

The document from 2013 provides a comprehensive overview of hair care and cosmetics, emphasizing the role of these products in individual appearance and self-perception. It explains that hair health is influenced by factors such as hair care habits and external damage, with longer hair being more susceptible to weathering. Cosmetic treatments are designed to cleanse, condition, style, and color hair, while medicinal treatments address scalp conditions. The document details the types of surfactants in shampoos, their cleansing and conditioning properties, and the inclusion of additives like moisturizers and UV absorbers. It also discusses the effectiveness of ingredients like zinc pyrithione in treating dandruff and the safety of shampoo ingredients. Concerns about the long-term use of permanent hair dyes and their potential health risks are mentioned, along with the changes in aging hair and the questionable efficacy of hair growth agents in shampoos. The document advises on minimizing hair damage and using appropriate hair care products to maintain hair health, while also noting the lack of evidence for hair loss from shampoos with certain ingredients like dimethicone.