PROBLEM TO BE SOLVED: To obtain a multiagent-type hair treatment agent that improves the feel of damaged hair and color retention after hair dyeing treatment and to provide a method for use thereof. To obtain a multiagent-type hair treatment agent that improves the feel of damaged hair and color retention after hair dyeing treatment and to provide a method for use thereof.SOLUTION: The multiagent-type hair treatment agent comprises a first hair treatment agent obtained by mixing (A) a polyurethane with (B) a polyether-modified silicone and a second hair treatment agent composed of at least one kind selected from the group consisting of (C) a cationic surfactant, (D) a cationic polymer and (E) an organic acid.COPYRIGHT: (C)2008,JPO&INPIT【課題】損傷毛の感触を良好にすることができるとともに染毛処理後の毛髪の色持ちを良好にすることができる多剤式毛髪処理剤及びその使用方法を提供する。【解決手段】本発明の多剤式毛髪処理剤は、(A)ポリウレタン類及び(B)ポリエーテル変性シリコーンを配合する毛髪処理第1剤と、(C)カチオン性界面活性剤、(D)カチオン性高分子及び(E)有機酸の群から選ばれる少なくとも一種を配合する毛髪処理第2剤からなることを特徴とする。【選択図】なし