PROBLEM TO BE SOLVED: To provide a hair dye composition having excellent hair dyeing properties.SOLUTION: A hair dye composition has a first agent and a second agent, where (1) the first agent comprises (a) at least one kind selected from a group consisting of tannic acid, gallic acid and gallic acid derivatives and (b) 0.5 mass% to 10 mass% of ammonium hydrogen carbonate relative to the total mass of the first agent, and where (2) the second agent contains an iron salt.COPYRIGHT: (C)2014,JPO&INPIT【課題】染毛性が高い染毛剤組成物の提供。【解決手段】第1剤と第2剤とを有する染毛剤組成物であって、(1)第1剤が(a)タンニン酸、没食子酸及び没食子酸誘導体からなる群より選ばれる少なくとも1種と、(b)炭酸水素アンモニウムを第1剤の全質量に対して0.5質量%~10質量%と、を含み、(2)第2剤が鉄塩を含む、染毛剤組成物。【選択図】なし
