Patent ID: 7759378
Filing Date: 2010-07-20
Classification: A61K,A61Q,Y10S

Abstract:
1. A method for strengthening keratin fibers, comprising applying, simultaneously or separately, to said keratin fibers, said keratin fibers having optionally been moistened, at least one compound A and at least one compound B: wherein compound A is an N-carboxyanhydride of formula (II): wherein R R wherein X is chosen from —O—, —S— and —NR wherein R R (i) a hydrogen atom, (ii) linear and branched, saturated and unsaturated, C wherein said alkyl group is optionally interrupted with at least one hetero atom, and r′ and r″, which are identical or different, are each chosen from a hydrogen atom and C  wherein s is 0 to 4, and wherein R 4 respresents a hydrogen atom, NH 2 , OH, SH, -CHOHCH 3 , -CONH 2 , —C 6 H 5 or —C 6 H 5 pOH, wherein pOH is para-OH; and wherein m is 3 to 5; at least one of said compounds (A) and (B) being present in a cosmetically acceptable medium, optionally rubbing said fibers for a period of about 2 to 30 minutes, and optionally rinsing, with the proviso that if compound A is sarcosine N-carboxyanhydride, then compound B is not 2-aminooctadecane-1,3-diol.