PROBLEM TO BE SOLVED: To provide a hair treatment agent which hardly causes curled hair during sleeping and can impart smoothness to the hair and maintain the cohesiveness or smoothness of hair until the next hair washing.SOLUTION: There is provided a hair treatment agent which comprises the following components (A) to (D): (A) cationic polysaccharides, (B) a specific crosslinked cationic polymer, (C) a fatty acid or a salt thereof and (D) a cationic surfactant.SELECTED DRAWING: NoneCOPYRIGHT: (C)2018,JPO&INPIT【課題】毛髪を寝ぐせがつきにくくするとともに、毛髪に滑らかさを付与し、かつ毛髪のまとまりや滑らかさを次の洗髪時まで持続させることができる毛髪処理剤の提供。【解決手段】成分(A)~(D)を含有する毛髪処理剤。 (A) カチオン性多糖類 (B) 特定の架橋型カチオン性ポリマー (C) 脂肪酸又はその塩 (D) カチオン性界面活性剤【選択図】なし