PROBLEM TO BE SOLVED: To provide a damaged hair improver and a hair cosmetic which improve elasticity and moisture retention of hair daily damaged by physical and chemical action.SOLUTION: A damaged hair improver is composed of a taurine derivative in which a nitrogen atom is replaced by a group represented by following general formula (2), and a hair cosmetic includes the damaged hair improver (in the formula (2), R3 is an alkyl group having a straight chain or a branch of a carbon number of 1-8, an alkenyl group, or a hydroxyalkyl group).COPYRIGHT: (C)2014,JPO&INPIT【課題】日常での物理的、化学的作用により損傷を受けた毛髪の弾力性及び保湿性を改善するための損傷毛髪改善剤及び毛髪化粧料の提供。【解決手段】窒素原子が、下記一般式(2)で表される基、(式中、R3は直鎖又は分岐した炭素数1~8のアルキル基、アルケニル基もしくはヒドロキシアルキル基)で置換されたタウリン誘導体からなる損傷毛髪改善剤、並びに該損傷毛髪改善剤を含有する毛髪化粧料。【選択図】なし
