| 摘要 |
A skin cleansing composition, comprising
(A) an alkyl ether carboxylic acid or a salt thereof represented by formula (1):
wherein, R 1 represents an alkyl group having 4 to 22 carbon atoms, n represents a number of from 0 to 20, and M represents a hydrogen atom, alkali metal, alkaline earth metal, ammonium, or organic ammonium,
wherein, R 1 has an average carbon number of from 10.8 to 12.8,
and wherein, the alkyl ether carboxylic acid or a salt thereof contains a component in which n = 0 in an amount of more than 9.6% by mass and 27% by mass or less, and a component in which n = 1 and a component in which n = 2 in a total amount of from 21% by mass or more and less than 40% by mass, and
(B) an alkyl sulfate or polyoxyethylene alkyl sulfate represented by formula (2):
wherein, R 2 represents an alkyl group or an alkenyl group having 8 to 22 carbon atoms, m represents a number of from 0 to 20 and the average of m is 2 or more and less than 4, and Y represents a hydrogen atom or a cation selected from alkali metal, alkaline earth metal, ammonium, alkyl ammonium, alkanol ammonium, and glucammonium.
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒR 1 -O-(CH 2 CH 2 O)n-CH 2 -COOM€ƒ€ƒ€ƒ€ƒ€ƒ(1)
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒR 2 -O-(CH 2 CH 2 O) m -SO 3 Y€ƒ€ƒ€ƒ€ƒ€ƒ(2) |
