Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A permanent wave, commonly called a perm, involves the use of chemicals to break and reform the bonds of the hair. The hair is washed and wrapped on a perm rod and waving lotion is applied with a base. This solution creates a chemical reaction that softens the inner structure of the hair by breaking some of the cross links within and between the protein chains of the hair. The hair swells, stretches and softens, then molds around the shape of the perm rod. a while back, many women have wished to have wavy or curly hair which seemed more attractive than the more common straight hair. Attempts to curl it by wetting and winding or tying with paper produces only temporary effects. So called water- or finger- waving or setting can be produced by manipulating the wet hair with the fingers, using a viscous lotion (generally made with tragacanth gum) to hold it in place. Washing would immediately destroy the waving. High temperatures were known to be effective for waving hair but impractical unless applied to hair separated from the scalp, which is how wigs were made.

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