Milk-protein hydrolyzates and compositions for use as hair and skin treating agent

摘要

Milk protein hydrolyzate or slats thereof having following properties: (a) said hydrolyzate is a mixture of peptides having molecular weights less than 1000 daltons; (b) 90 % by weight or more of the whole aromatic amino acids included in said hydrolyzate is free amino acids; (c) said hydrolyzate has a property to activate proliferation of human cutaneous cells; and (d) said hydrolyzate does not have antigenicity of the milk protein. A fraction of milk protein hydrolyzate or salts thereof having following properties: (a) said fraction is a mixture of peptides having molecular weights less than 1000 daltons; (b) the rate of aromatic amino acids to the whole amino acids included in said fraction is less than 5 % by weight; (c) said fraction has a property to activate proliferation of human cutaneous cells; and (d) said fraction does not have antigenicity of the milk protein. A hair and skin treating composition comprising an effective quantity of the milk protein hydrolyzate, the fraction of the milk protein hydrolyzate and/or salts thereof.