PCA and its salts are reported to function in cosmetics as skin/scalp conditioner - humectants. The intended use of ingredients that function as humectant skin/scalp-conditioning in cosmetics is to increase the water content of the top layers of skin/scalp. Humectants are essential cosmetic ingredients which are hygroscopic in nature and absorb moisture from the air. Humectants form hydrogen bonds with water molecules and help to retain the natural moisture of the skin/scalp.The substance is mainly used in some of our hair styling mousses.