The purpose of the present invention is to provide a method of dyeing hair that is not easy to harm hair and can reduce skin barriers, and dye can enter hair more easily. The hair dyeing method of the present invention is characterized by including a step of applying a mixture of the hair dye of (A) and the hair cosmetic of (B) in a predetermined ratio, and a step of setting a predetermined time after the application； (A) The hair dye contains at least one kind selected from the group consisting of thioglycolic acid, cysteine, 3-mercapto-1,2-propanediol, cysteamine, and derivatives and salts thereof. Hair dyes of sex dyes, HC dyes, second amino acids, first cationic surfactants, tackifiers, oils, first pH adjusters and wetting agents, wherein the pH of the hair dyes is above pH 3.5 Dyes. (B) The hair cosmetic is a hair cosmetic containing at least an alkali agent, a first amino acid, a higher alcohol having 12 to 22 carbon atoms, a surfactant, and a thickener.本發明之目的為提供一種不易傷害到毛髮且可減低皮膚障礙下，染料更容易進入毛髮的染髮方法。本發明之染髮方法的特徵為，含有將以所定比例的(A)的染髮劑與(B)的毛髮化妝料進行混合者進行塗布的步驟，與於前述塗布後設定所定時間的步驟者；(A)的染髮劑為至少含有選自由巰基乙酸、半胱胺酸、3-巰基-1,2-丙烷二醇、半胱胺以及此等衍生物及鹽所成群的至少1種、鹼性染料、HC染料、第二胺基酸、第一陽離子界面活性劑、增黏劑、油劑、第一pH調整劑及濕潤劑之染髮劑，其中前述染髮劑的pH為pH3.5以上的染劑。(B)的毛髮化妝料為至少含有鹼劑、第一胺基酸、碳數為12~22的高級醇類、界面活性劑及增黏劑的毛髮化妝料。
