Patent ID: 7776806

Claim:
A hair cleansing composition comprising the following components (A) to (D): (A) from 10 to 20 wt % of a sulfate surfactant represented by the following formula (1): R 1 —O—(C 2 H 4 O) n —SO 3 M (1) wherein, R 1 represents a linear or branched alkyl or alkenyl group having from 10 to 18 carbon atoms, n stands for 0 or a positive integer and M represents sodium or ammonium, wherein the sulfate surfactant is composed of from 30 to 45 wt. % of a sulfate exhibiting n=0, from 18 to 27 wt. % of a sulfate exhibiting n=1, from 10 to 20 wt. % of a sulfate exhibiting n=2 and the balance of sulfates exhibiting n=3 or greater, and contains the sulfates exhibiting n=0 to 2 in a total amount of 70 wt. % or greater based on the total sulfates, (B) from 0.2 to 1 wt % of p-toluenesulfonic acid, naphthalenesulfonic acid, or a salt thereof of either acid, (C) from 0.3 to 2 wt % of an organic acid selected from the group consisting of malic acid, glycolic acid and lactic acid, (D) from 0.5 to 10 wt % of an organic solvent comprising polypropylene glycol having a molecular weight of from 200 to 5000; and optionally, at least one selected from the group consisting of ethanol and benzyl alcohol; wherein the composition has a pH at 25° C. of from 3 to 5 when diluted to 20 times the weight with water.