PROBLEM TO BE SOLVED: To provide a composition which sufficiently dyes or decolorizes the hair and provides a tension, a sturdiness, and a feeling of unity to the hair.SOLUTION: The invention provides a second agent composition to dye or decolorize the hair containing the following (A)-(C). (A) contains 10-30% by weight of an oil solution (a1) which is liquid at normal temperature, and an oil solution (a2) which is solid at normal temperature, wherein the oil solution which is solid at normal temperature contains a higher alcohol which is solid at normal temperature, and the weight ratio (A)/(a2) of the total weight (A) of (a1) and (a2) to (a2) is 3-8. (B) contains a cationic surface active agent (b1), and a nonionic surface active agent (b2), wherein the cationic surface active agent contains the alkyl chloride trimethylammonium which has 16-22 carbon atoms in an alkyl base part, and the total weight (B) of (b1) and (b2) is 0.5-1.8% by weight. And (C) is 0.1-12% by weight of an oxidizing agent. The weight ratio (A)/(B) of (A) and (B) is 5-30.COPYRIGHT: (C)2015,JPO&INPIT【課題】本発明の課題は、毛髪を十分に染色又は脱色し、毛髪にハリ・コシ及びまとまり感を与える組成物を提供することである。【解決手段】本発明は、毛髪を染色又は脱色するための第2剤組成物であって、(A)(a1)常温で液状の油剤10~30重量%、及び、(a2)常温で固形状の油剤、ここで、該常温で固形状の油剤は常温で固形状の高級アルコールを含み、(a1)及び(a2)の合計重量(A)と(a2)との重量比(A)/(a2)は3~8である、(B)(b1)カチオン界面活性剤、及び、(b2)非イオン界面活性剤、ここで、該カチオン界面活性剤はアルキル基部分において16~22個の炭素原子を有する塩化アルキルトリメチルアンモニウムを含み、(b1)及び(b2)の合計重量(B)は0.5~1.8重量%である、及び、(C)酸化剤、0.1~12重量%を含有し、(A)と(B)の重量比(A)/(B)は5~30である組成物に関する。【選択図】なし