▎ 摘　　要

NOVELTY - Hair dye comprises fixing agent and coloring agent, where the fixing agent is polysilazane, and the coloring agent is graphene. USE - Used as hair dye. ADVANTAGE - The hair dye is non-toxic and harmless; has excellent properties e.g. stain resistance, easy cleaning, strong adhesion, durability, UV resistance, good washing resistance and simple process; is a single-agent spray hair dye, which is resistant to water, washing, and ultraviolet rays, and permanent. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) preparing hair dye comprises (i) dissolving polysilazane in a food-grade solvent to form a polysilazane solution, where the concentration of the polysilazane solution is 5-20%; and (ii) pouring graphene into the polysilazane solution, stirring or ultrasonically mixing uniformly, to obtain the polysilazane graphene hair dye, where polysilazane is a nano polysilazane with a purity of more than 99%, and the average particle size of the polysilazane is 30-100 nm; and (2) use method of hair dye comprising washing the hair, blowing dry, smearing or spraying the polysilazane graphene hair dye on the hair, keeping it for 10-30 minutes, combing and blowing dry, and washing with water.