Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A relaxer is a type of lotion or cream which makes hair less curly, and easier to straighten by chemically "relaxing" the natural curls. The active agent is usually a strong alkali, although some formulations are based on ammonium thioglycolate instead. Hair relaxing, or lanthionization, can be performed by a professional cosmetologist in a salon, or at home with relaxer kits purchased from discount stores and pharmacies. As with hair dye, the treated portion of the hair moves away from the scalp as the new growth of untreated hair sprouts up from the roots, requiring periodic retreatment (about every 6–8 weeks) to maintain a consistent appearance. The relaxer is applied to the roots of the hair and remains in place for a "cooking" interval, during which it alters the hair's texture by a process of controlled damage to the protein structure. The hair can be significantly weakened by the physical overlap of excessive applications or by a single excessive one, leading to brittleness, breakage, or even widespread alopecia.

Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.