PROBLEM TO BE SOLVED: To provide a hair cosmetic excellent in fixing of hair tips and in feeling, and easy to spread to hair tips, providing a natural hair appearance even after receiving hard intense damage, and keeping fixing after finger through or adjustment.SOLUTION: The hair cosmetic is a water-in-oil type cosmetic containing components (A)-(C): component (A) is composed of a poly (N-acylalkyleneimine) segment (b) which is composed of a repeating unit represented by formula (1) (wherein R1 is H, 1-22C alkyl, aralkyl or aryl and n is 2 or 3), bonded to at least two Si atoms of an organopolysiloxane segment (a) constituting the main chain through an alkylene group including a heteroatom, and has a number average molecular weight of (b) of 1,600-3,500 with a mass ratio of the organopolysiloxane segment (a) to the poly(N-acylalkyleneimine) segment (b) of 42/58 to 58/42 and a weight average molecular weight of the organopolysiloxane segment between adjacent (b)s is 1,600-3,500, and the weight average molecular weight of (a) is 7,000-100,000 component (B) is an oil aent and component (C) is a surfactant.COPYRIGHT: (C)2012,JPO&INPIT【課題】極めて激しい損傷を受けた毛髪であっても、毛先のまとまりがよく、感触にも優れ、毛先に広げやすく、自然な髪の外観が得られ、しかも指通しや手直しをした後でもまとまりを持続させることができる毛髪化粧料の提供。【解決手段】成分(A)~(C)を含有する水中油型乳化毛髪化粧料。成分(A):主鎖を構成するオルガノポリシロキサンセグメント(a)のSi原子の少なくとも2つに、ヘテロ原子を含むアルキレン基を介して、繰り返し単位(1)からなるポリ(N-アシルアルキレンイミン)セグメント(b)が結合してなり、(b)の数平均分子量が1,600~3,500、(a)と(b)との質量比が42/58~58/42、隣接する(b)間におけるオルガノポリシロキサンセグメントの重量平均分子量が1,600~3,500、(a)の重量平均分子量が7,000~100,000であるオルガノポリシロキサン。(B):油剤(C):界面活性剤【選択図】なし
