설명(영) |
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Protein Derivatives form a broad category of materials which are prepared from Proteins by partial hydrolysis and/or by reaction with other chemicals to yield cosmetically acceptable raw materials. This definition excludes the ultimate hydrolysis product of proteins, the Amino Acids and their derivatives.
Many Protein Derivatives are prepared by subjecting animal or vegetable proteins to enzymatic or chemical hydrolysis. The resulting polypeptides may then be further chemically modified, usually by amidation with a reactive Fatty Acid derivative. The acidity of the resulting acylated polypeptide (from the presence of the free carboxyl groups on the polypeptide) is then neutralized with a suitable base to form a water-soluble product which possesses detersive and substantive properties.
Protein hydrolysates (e.g., Hydrolyzed Elastin) and acylated materials (e.g., TEA-Oleoyl Hydrolyzed Collagen) are used as conditioning agents in hair and skin products. |