Hair treating composition

A hair-treating composition selected from the class consisting of hair setting, shampoo, and conditioning compositions comprising an aqueous solution containing from about 1 to about 10% by weight of an adduct of an oligomer of hydrolyzed chitosan and a mixture of amino acids obtained from the hydrolysis of a keratin raw material selected from the class consisting of human hair, animal hair, horn, and feathers and which has a weight average molecular weight of about 80 to 250 has been inserted in claim 9, line 9, said hydrolyzed chitosan being a mixture of glucosamine oligomers having the following structure:

• ##STR4## where n is an integer having the value of 1-10, the percentage by weight of the oligomer mixture in which n is 1, 2, or 3 is at least 70% and in which the percentage by weight of the oligomer in which n is greater than 6 is less than 25%, the proportion of hydrolyzed chitosan to amino acid mixture being from 3:1 to 1:3.