4 oz. PURE KERATIN AMINO ACIDS. Makes 400oz. - 1600 oz. product. The amino acids are extracted out of the keratin (amino acids are what make up a protein) KeratinAminoAcids is a powerful moisturizer that can penetrate the hair enhancing its conditioning effects. Since it has a composition similar to hair and is small enough to penetrate the hair shaft where it becomes highly substantive. It is ideal for hair that has suffered cuticle damage due to the hair’s increased porosity. It can help give the hair more sheen and increased volume. It is a clear amber liquid with a very strong odor. Solubility - Water RECOMMENDED ADDITION 0.5-2%Do not use undilluted. Use at the recommended addition rate for your products. Great for hair, skin, shampoos, cosmetics, etc.