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Is 1H-Indole-5,6-diol vegan?

1H-Indole-5,6-diol

Vegan

1H-Indole-5,6-diol (5,6-dihydroxyindole) is an organic compound and key intermediate in the biosynthesis of the pigment eumelanin. It can be produced synthetically for use as a hair dye ingredient and is not derived from animals.

Also known as 5,6-Dihydroxyindole, DIHYDROXY-INDOLE
INCI name 1H-Indole-5,6-diol
CAS number 3131-52-0
EC number 412-130-9
CosIng ID 91042
Last reviewed 9 July 2026

Sources

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