The partial hydrolysate of the keratin from enzymatically degraded shear wool and is a brownish-yellow solution with a slight inherent odor. Due to its composition it can be described as hydrolyzed keratin as a hair-identical protein hydrolysate. Compared to other proteins, the keratin has a high proportion of cystine. It not only shows an affinity to hair; on skin it acts as a protective and care substance. It has the best alcohol solubility out of all protein hydrolysates.