PROBLEM TO BE SOLVED: To provide a hair dye having a specified dye which is identical to an ingredient included in a plant compounded therein, wherein the specified dye possesses a high densely dyeing property.SOLUTION: The hair dye is compounded from one or two or more dyes selected from brazilin, hematoxylin, berberine, crocin, monascorublin, xanthomonasin, carminic acid, curcumin, and gardenia blue, a reducing agent with a thiol group, and an alkali agent.