Kao Corporation

Tamami Iwase

Michiko Tada

Keiko Ishii

Shiyo Shichiri

Provided are a leave-on hair cosmetic composition, containing the following components (A), (B) and (C): (wherein, R: H, Calkyl, cycloalkyl, aralkyl or aryl, and n: 2 or 3), wherein the latter segment has been bonded to at least one silicon atom of the former segment via a hetero-atom-containing alkylene group; having the organopolysiloxane segment and the poly(N-acylalkyleneimine)segment at a weight ratio of from 98/2 to 40/60; and having a weight average molecular weight of from 50,000 to 500,000; and a hair treating method with the composition. The hair cosmetic composition of the invention can essentially improve the hair quality, give excellent luster, manageability, setting property to the hair, and also give excellent flexible hair feel and elasticity.

Growing community of inventors

Tokyo, Japan

Tamami Iwase