The regulation stipulates the method of test for 54 hair dyes in cosmetics, including 2,6-Diaminopyridine, Phenyl methyl pyrazolone, 4-Amino-2-hydroxytoluene, N,N-bis(2-Hydroxyethyl)-p-phenylenediamine, Dihydroxyindoline, m-Phenylenediamine, 1-Hydroxyethyl-4,5-diamino pyrazole, etc.
