Patent ID: 7943119

Claim:
A leave-on hair cosmetic composition, which comprises the following components (A), (B) and (C): (A) from 0.1 to 10 wt. % of malic acid or a salt thereof, (B) from 0.1 to 5 wt. % of at least one organic solvent selected from the group consisting of benzyl alcohol and 2-benzyloxyethanol, and (C) from 0.5 to 5 wt. % of at least one organopolysiloxane having an organopolysiloxane segment and a poly(N-acylalkyleneimine) segment having a recurring unit represented by the following formula (1): wherein R1 represents an ethyl group, and n is 2, wherein the poly(N-acylalkyleneimine) segment has been bonded to at least one silicon atom of the organopolysiloxane segment via a hetero-atom-containing alkylene group, wherein the hetero-atom-containing alkylene group is —(CH 2 ) 3 —NH—, and further comprises from 1 to 20 wt. % of ethanol, wherein a pH of the leave-on hair cosmetic composition when diluted to 20 times the weight with water is from 3 to 4.5 at 25° C.