Patent ID: 8425889

Claim:
A cleansing composition, comprising: (A) N-acyl-aspartic acid or a salt thereof represented by formula (1): wherein R is an alkyl group having from 7 to 23 carbon atoms, and M 1 and M 2 are each, independently, a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, alkylammonium, alkanolammonium or a protonated basic amino acid; (B) a first N-acyl-diaspartic acid or a salt thereof, represented by formula (2): wherein R is the same alkyl group specified in formula (1), and M 3 , M 4 and M 5 are each, independently, a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, alkylammonium, alkanolammonium or a protonated basic amino acid; a second N-acyl diaspartic acid or salt thereof, represented by formula (3): wherein R is the same as in formula (2), and M 6 , M 7 and M 8 are each, independently, a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, alkylammonium, alkanolammonium or a protonated basic amino acid, and the weight ratio of the first N-acyl-diaspartic acid or a salt thereof represented by formula (2) to the second N-acyl-diaspartic acid or a salt thereof represented by formula (3) is 1:3 to 3:1; and (C) a higher fatty acid or a salt thereof represented by formula (4): [Formula 4] R—COOM 9 (4) wherein R is the same as in formula (2), and M 9 is a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, alkylammonium, alkanolammonium or a protonated basic amino acid, wherein in a simile composition, R is defined the same in formulae (1) through (4) such that R has the same number of carbon atoms in components (A), (B) and (C).