PROBLEM TO BE SOLVED: To provide a hairdye composition capable of exhibiting excellent effects of inhibiting the staining of the bare skin while keeping the hair-dyeing power, and to provide a method for dyeing the hair.SOLUTION: The hairdye composition containing (A) a lauryl pyridinium salt, (B) an acid dye and (C) an aromatic alcohol is regulated so that when the moles of the lauryl pyridinium salt (A) and the acid dye (B) are represented by (a) and (b) respectively, the ratio (b)/(a) may be within the range of 0.01 to 1.COPYRIGHT: (C)2009,JPO&INPIT【課題】染毛力を維持しながら、優れた地肌汚れ防止効果を発揮できる染毛料組成物及び毛髪の染色方法を提供する。【解決手段】染毛料組成物において、(A)ラウリルピリジニウム塩、(B)酸性染料、及び(C)芳香族アルコールを含有する染毛料組成物において、前記(A)ラウリルピリジニウム塩、及び(B)酸性染料のモル数をそれぞれa,bとしたときにb/a=0.01~1であることを特徴とする。【選択図】なし
