To provide a hair dyeing method, in which oxidation dye precursor and azo dye are combined and with which the hair is dyed into two color layers at once so as to provide a dyeing effect that changes hue and tone depending on the viewing angle.SOLUTION: There is provided a hair dyeing method comprising the following steps (I) and (II): step (I): a step of mixing a first agent containing an alkaline agent and an oxidation dye precursor, a second agent containing an oxidizing agent and a third agent which contains one or two or more dyes (A) selected from a group consisting of the following (A-1), (A-2) and (A-3), and having a pH of 7.5 or more and 12 or less at 25°C when diluted 10 times by mass with water； and step (II): a step of applying the mixed solution prepared in step (I) to the hair.SELECTED DRAWING: None【課題】酸化染料前駆体とアゾ染料を併用し、一度に毛髪を２層の色相に染毛することで、見る角度によって色相や色調が変化するという染毛効果が得られる染毛方法の提供。【解決手段】次の工程（Ｉ）及び（II）を有する染毛方法。 工程（Ｉ）：アルカリ剤及び酸化染料前駆体を含有する第１剤、酸化剤を含有する第２剤、並びに下記(A-1)、(A-2)及び(A-3)からなる群より選択される１種又は２種以上の染料(A)を含有し、水で10質量倍希釈したときの25℃におけるpHが7.5以上12以下である第３剤を混合する工程 工程（II）：工程（Ｉ）にて調製された混合液を毛髪へ塗布する工程【選択図】なし
