PROBLEM TO BE SOLVED: To provide a hair cosmetic which imparts high slippage, for both hairs when shampooed and after dried, not to impart unpleasantness such as stiffness feeling and stickiness feeling, and further which does not accumulate in hairs not to inhibit hair dyeing properties.SOLUTION: The hair cosmetic comprises, by 0.001 to 10 wt.%, a phosphorylcholine group-containing polymer having a structural unit represented by the formula (1a) and having the weight-average molecular weight of 5,000 to 2,000,000 or the like, and is useful for a shampoo, a rinse, a hair treatment or the like.【課題】洗髪時および乾燥後の毛髪のいずれに対しても高い滑り性を付与し、きしみ感やべたつきなどの不快感がなく、更には、毛髪に蓄積せずに染毛性を阻害しない毛髪用化粧料の提供。【解決手段】下記式で表される構成単位を有する重量平均分子量5000~2000000のホスホリルコリン基含有重合体等を0.001~10重量%含有し、シャンプー、リンス、ヘアトリートメント等に有用な毛髪用化粧料。【選択図】なし
