Patent ID: 6159482
Filing Date: 2000-12-12
Classification: A61K,A61Q

Abstract:
A method for removing skin pigmentation marks or for depigmenting or bleaching human skin, head hair or body hairs, comprising applying a composition comprising at least one oxamate of formula (I): ##STR2## wherein: R represents a hydrogen atom or a radical selected from the group consisting of a hydroxyl radical, a radical --OR', a radical --COR', a radical --COOR', a radical --NR'R"", a radical --CONR'R"", a linear, cyclic or branched, saturated or unsaturated, optionally hydroxylated, C.sub.1 to C.sub.30 aliphatic hydrocarbon radical, and a substituted or unsubstituted aryl radical,R.sub.1 and R.sub.2, which may be identical or different, represent a hydrogen atom or a radical selected from the group consisting of a hydroxyl radical, a radical --OR', a radical --COR', a radical --COOR', a radical --NR'R"", a radical --CONR'R"", a radical --SR', --CH.sub.2 OR', a linear, cyclic or branched, saturated or unsaturated, optionally hydroxylated, C.sub.1 to C.sub.30 aliphatic hydrocarbon radical, and a substituted or unsubstituted aryl radical,wherein R' and R"", which may be identical or different, represent a hydrogen atom, a radical selected from the group consisting of a linear or branched, saturated or unsaturated, optionally hydroxylated, C.sub.1 to C.sub.30 aliphatic hydrocarbon radical, and a substituted or unsubstituted aryl radical, an amino acid residue or a sugar residue,R.sub.3 represents a hydrogen atom or a radical --COOR.sub.4,wherein R.sub.4 represents a linear, cyclic or branched, saturated or unsaturated, C.sub.1 to C.sub.30 aliphatic hydrocarbon or alkoxyl radical,X represents a radical selected from the group consisting of a radical --OR.sub.5, a radical --SR.sub.5 and a radical --NR.sub.6 R.sub.7,wherein R.sub.5, R.sub.6 and R.sub.7, which may be identical or different, represent a hydrogen atom, a radical selected from the group consisting of a linear, cyclic or branched, saturated or unsaturated, optionally hydroxylated, C.sub.1 to C.sub.30 aliphatic hydrocarbon radical, and a substituted or unsubstituted aryl radical, an amino acid residue, a peptide residue or a sugar residue; anda cosmetically or dermatologically acceptable medium,to the skin, head hair or body hairs.