A hair care product which comprises a salt of an acylated compound obtained by condensing fatty acids containing at least 40% of branched fatty acids having 20 to 32 carbon atoms with silk protein-derived peptides, which hair care product is effective in imparting a good texture and preventing the hair from damages (split hair, clipped hair, etc.) without giving any tackiness or greasiness.
An acylated peptide or a salt thereof obtainable by condensing a protein-derived peptide with a lanolin-derived non-hydroxyl fatty acid containing 30-45% by weight of iso-type fatty acid of the following formula (I), 30-50% by weight of anteiso-type fatty acid of the following formula (II), 10-30% by weight of normal type fatty acid of the following formula (III): and less than 10% by weight of hydroxyl fatty acid, the total amount of said iso-type fatty acid and said anteiso-type fatty acid being at least 60% by weight; and a cosmetic composition for hair or skin containing the acylated peptide or a salt thereof; and the cosmetic composition gives excellent moist feel and gloss and the like to hair and an excellent feeling on use, such as smoothness and moistness to skin.
The invention discloses quaternary ante-iso acids useful as additives in personal care products. Various quaternary derivatives of ante-sio acids are described, and examples of their use in personal care composition are presented.
Skin care, hair care and hair coloring compositions comprising a water-soluble silk protein as an active ingredient are described. The water-soluble silk protein deposits onto the skin or the natural hair keratin to provide a smooth and durable film to provide added strength for protection against environmental, chemical, and grooming associated damage. The compositions may be in the form of skin care, skin cleansing, or anti-wrinkle products, shampoos, conditioners, lotions, aerosols, gels, mousses, dyes, or bleaches.
