PROBLEM TO BE SOLVED: To provide a hair cosmetic which imparts smoothness to hair, prevents dryness under low humidity, has good styling properties, and does not affect treatment with a hair dye or a permanent wave agent.SOLUTION: The hair cosmetic includes 0.01-5 mass% of the following component (A) and 0.2-20 mass% of (B), based on the total amount: (A) an N-acyl peptide compound (the number of carbon atoms of an acyl group is 8-20 the number of a constituent amino acid residue is 2-20 and the percentage of the sum of the molecular weight of the acyl group based on the total molecular weight is 0.30-0.56) and (B) a polytetramethylene glycol derivative represented by the following general formula (1): R1O-(CH2CH2CH2CH2O)n-R2 (1), wherein R1 and R2 may be the same or different, and are each a hydrogen atom or a 8-20C fatty acid residue and n is the average addition mole number of an oxytetramethylene group, and is 5-25.COPYRIGHT: (C)2012,JPO&INPIT【課題】毛髪に滑らかさを付与し、低湿度下のパサつきを防止し、スタイリング性が良好で、かつ、染毛剤やパーマネント剤の処理に影響を与えない毛髪化粧料を提供する。【解決手段】下記成分(A)を全量に対し0.01~5質量%、(B)を全量に対し0.2~20質量%含有する毛髪化粧料。(A)N-アシル化ペプチド化合物(アシル基の炭素原子数が8~20、構成アミノ酸残基数が2~20であり、全分子量に対するアシル基の分子量の和の比率が0.30~0.56である)(B)下記一般式(1)で示されるポリテトラメチレングリコール誘導体R1O-(CH2CH2CH2CH2O)n-R2 (1)(R1とR2は同一又は異なってもよい水素原子、又は炭素原子数8~20の脂肪酸残基であり、nはオキシテトラメチレン基の平均付加モル数であって、5~25である。)【選択図】なし