PROBLEM TO BE SOLVED: To provide a hair cosmetic composition having excellent preparation stability even when mixed with a carbonate, and imparting favorable brightness to hair.SOLUTION: A hair cosmetic composition is constituted as a hair dye or a hair-bleaching agent, and is applied to hair by mixing a first agent and a second agent when being used. The hair cosmetic composition contains following components (A) component to (C) component in the first agent: (A) potassium carbonate, (B) a higher alcohol, and (C) a cationic surfactant.COPYRIGHT: (C)2012,JPO&INPIT【課題】炭酸塩を配合しても製剤安定性に優れ、かつ毛髪に良好な明度を付与する毛髪化粧料組成物を提供すること。【解決手段】染毛剤又は毛髪脱色剤として構成され、使用時に第1剤と第2剤を混合して毛髪に適用される毛髪化粧料組成物であって、第1剤に下記(A)成分~(C)成分を含有することを特徴とする毛髪化粧料組成物。(A)炭酸カリウム、(B)高級アルコール、(C)カチオン性界面活性剤。【選択図】なし