▎ 摘　　要

NOVELTY - Washable hair dye comprises agent I and agent II, where agent I comprises 0.25-5 wt.% graphene, 5-10 wt.% graphene stabilizer, 0.5-2.5 wt.% ascorbic acid, 1-3 wt.% propyl gallate, 5 wt.% glycerol, 2-5 wt.% thickener and water (balance), and agent II comprises 5-10 wt.% ferrous sulfate, 0.1-0.5 wt.% ascorbic acid, 5 wt.% glycerol, 1-5 wt.% alkaline agent, 2-5 wt.% thickening agent and water (balance). USE - Used as washable hair dye. ADVANTAGE - The washable hair dye maintains black color until 70 water wash. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing washable hair dye comprising (i) adding ascorbic acid and graphene stabilizer, heating, stirring at 90 degrees C for 1-4 hours, filtering and centrifuging to obtain graphene dispersion, (ii) heating water at 60-65 degrees C, adding agent I raw material, adding graphene dispersion, stirring, and cooling to below 45 degrees C, and (iii) providing agent II raw material, heating in water at 60-65 degrees C, and cooling to below 45 degrees C.