Cosmetic compositions for the treatment of the hair and skin contain polymer constituted essentially by repeating units of the beta- alanine type

摘要

A cosmetic composition comprises in solution in an appropriate vehicle at least one polymer having 50-100% of repeating units of the &bgr;- alanine type having the formula ##STR1## and 0-50% of repeating units of the acrylamide type having the formula ##STR2## wherein R.sub.1 represents hydrogen or a member selected fromPPthe group consisting of (i) ##STR3## (ii) --CH.sub.2 OH, (iii) --(CH.sub.2).sub.n -- CH.sub.3 wherein n is 0 or a whole number fromPP1 to 11, (iv) ##STR4## wherein r' and r" each independently represent hydrogen or alkyl having 1-3 carbon atoms, (v) --CHOH--COOH, (vi) --CH.sub.2 --SO.sub. 3 Na,PP(vii) ##STR5## and (viii) --(CH.sub.2 --CH.sub.2 - - O).sub.m H wherein m ranges from 1 to 10, and R.sub.2 and R.sub.3 represent hydrogen or methyl.