PROBLEM TO BE SOLVED: To provide a hair dye composition having excellent hair dyeing properties and being a stable non-oxidation type as a formulation.SOLUTION: A hair dye composition comprises: (1) a first agent comprising (a) at least one kind selected from a group consisting of tannic acid, gallic acid and gallic acid derivative, and (b) ammonium salt and (2) a second agent containing iron salt.COPYRIGHT: (C)2014,JPO&INPIT【課題】染毛性が高く、製剤としても安定な非酸化型の染毛剤組成物の提供。【解決手段】(1)(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)アンモニウム塩とを含む第1剤、及び、(2)鉄塩を含む第2剤、を含む染毛剤組成物。【選択図】なし