PROBLEM TO BE SOLVED: To provide a hair treatment agent composition affording good hair touch even in prerinsing and/or shampooing after hair treatment and sustaining the hair touch.SOLUTION: The hair treatment agent composition, which is composed substantially of components each less than 12 in octanol/water partition coefficient (logKow), contains (A) a total of 10 mass% or more of predetermined amounts of two or more higher alcohols less than 12 of logKow and differing in the number of carbon atoms or logKow, (B) a nonionic surfactant having 1.4 or greater but less than 6 of logKow and a second nonionic surfactant less than 1.4 of logKow and (C) a conditioning component less than 12 of logKow.COPYRIGHT: (C)2009,JPO&INPIT【課題】毛髪処理後のプレンリンス時やシャンプー後においても良好な毛髪感触が得られ、その感触が持続する毛髪処理剤組成物を提供する。【解決手段】オクタノール/水-分配係数(logKow)が12未満の成分によって実質的に組成され、(A)成分:合計10質量%以上の、logKow が12未満でありかつ炭素数又は logKow が異なる高級アルコールの2種以上の所定量、(B)成分:logKow が1.4以上で6未満のノニオン性界面活性剤と logKow が1.4未満のノニオン性界面活性剤、(C)成分:logKow が12未満のコンディショニング成分、を含有する毛髪処理剤組成物。【選択図】なし