PROBLEM TO BE SOLVED: To provide a two-component composition for dyeing keratin fibers whereby a dye and a dye precursor adhere strongly to keratin fibers such as hair, to thereby color uniformly along the length of fibers, and impart gloss to the fibers after treatment.SOLUTION: The two-component composition for dyeing keratin fibers contains (A) at least one dye precursor and/or a direct dye, (B) at least one fatty acid glyceryl ester, (C) at least one cationic surfactant represented by general formula (I), and (D) a first preparation containing at least one of silica and/or ammonium hydrogencarbonate and a second preparation containing at least one oxidizing agent and at least one anionic or cationic surfactant, wherein the first preparation does not contain an anionic surfactant, a zwitter ionic surfactant and an amphoteric surfactant.COPYRIGHT: (C)2013,JPO&INPIT【課題】染料および染料先駆物質が毛髪などのケラチン繊維によく付着し、該繊維の長さに沿って均一に着色し、処理後に該繊維に光沢を与えるケラチン繊維染色用二成分組成物の提供。【解決手段】(A)少なくとも1つの染料先駆物質および/または直接染料;(B)少なくとも1つの脂肪酸グリセリルエステル;(C)少なくとも1つの下記一般式(I)のカチオン界面活性剤;および(D)シリカおよび/または炭酸水素アンモニウムの少なくとも1つを含んで成る第一調製物、並びに少なくとも1つの酸化剤および少なくとも1つのアニオンまたはカチオン界面活性剤を含んで成る第二調製物から成る、ケラチン繊維染色用二成分組成物であって、該第一調製物は、アニオン性界面活性剤、双性イオン性界面活性剤および両性界面活性剤を含有しない、ケラチン繊維染色用二成分組成物。【選択図】なし