PROBLEM TO BE SOLVED: To provide a hair cosmetic that has both hairstyle fixing power and arrangement power, and eliminates the need for alcohols.SOLUTION: A hair cosmetic contains an adhesiveness set resin and water, the adhesiveness set resin obtained by polymerizing the following components at a specific ratio: (A) a nonionic monofunctional ethylenic unsaturated monomer, which is polymerized into a homopolymer having a glass transition temperature of 300K or less, (B) an ethylenic unsaturated monomer having one or more carboxyl groups in the molecule, and (C) a bifunctional ethylenic unsaturated monomer represented by the formula [I] (R1 and R2 are H and the like, X is an oxyethylene group and the like, and n is an integer of 1-100).SELECTED DRAWING: NoneCOPYRIGHT: (C)2018,JPO&INPIT【課題】へアスタイル固定力とアレンジ力を両立でアルコール類不要毛髪化粧料の提供。【解決手段】(A)重合で得られるホモポリマーのガラス転移温度が300K以下のノニオン性単官能エチレン性不飽和単量体、(B)分子内にカルボキシル基を一つ以上持つエチレン性不飽和単量体、(C)式[I]で表される二官能エチレン性不飽和単量体、を特定割合で重合し得られる粘着性セット樹脂と水を含有する毛髪毛粧料。(R1及びR2はH等、Xはオキシエチレン基等、nは1~100の整数)【選択図】なし