BASF's Nutrilan Keratin W PP is used in personal care products for its ability to strengthen hair and skin, reduce breakage, and provide conditioning and protection. Derived from a hair-identical amino acid composition, it replenishes lost keratin to improve hair strength, elasticity, and manageability while also hydrating and improving the texture of the skin. It is formulated into various hair and skin care products, including shampoos, conditioners, serums, body washes, and skin conditioning agents