To provide a hair dye composition in a constitution containing a carbonate in the hair dye composition, which is capable of improving stability of the dye, and a method for stabilizing a color tone of a hair dyed by the hair dye composition. The present invention is concerned with a hair dye composition containing a carbonate, which includes (A) at least one selected from resorcin and its derivatives, and salts thereof, an upper limit of a compounding amount of the component (A) being 0.2% by mass or less, and (B) at least one dye selected from 5-(2-hydroxyethylamino)-2-methylphenol, 1,5-dihydroxynaphthalene, and a nitro dye.本發明提供一種在染毛劑組成物中含有碳酸鹽的構成中能夠提升染料的穩定性的染毛劑組成物，以及染毛劑組成物的色調穩定化方法。本發明在含有碳酸鹽的染毛劑組成物中含有(A)成分以及(B)成分，該(A)成分是選自間苯二酚及其衍生物、以及它們的鹽中的至少一種，且(A)成分的調配量的上限為0.2質量%以下，該(B)成分是選自5-(2-羥乙基氨基)-2-甲基苯酚、1,5-二羥基萘、以及硝基染料中的至少一種染料。
