Chemical properties: 5,6-dihydroxyindole is the second isomer of dihydroxyindole, pure 5,6-dihydroxyindole soluble in hot water, very stable in crystalline state, but quickly oxidized into melanin-like substances in microalkaline solution.

5,6-Dihydroxyindole is a non-toxic, side-effect permanent hair dye that is gradually becoming the best choice for synthetic hair dyes.

Application 5,6-Dihydroxyindole is an important intermediate of melaninogen and was first found in a plant in nature.

Hair dyeing mechanism as a permanent hair dye, 5,6-dihydroxyindole and its derivatives hair dyeing mechanism is the same, its action on hair keratin fiber, so that dyeing Chemicalbook color effect is very obvious, it enters the inside of the hair pulp, after dyeing washing is not easy to fade, will not be greatly affected by sunlight. As an effective substitute, 5,6-Dihydroxyindole is produced by the organism itself and is non-toxic and side effect to the body.