Dihydroxyindole
A cosmetic ingredient used as hair dyeing in skincare, haircare, and personal-care products sold in the European Union.
What is it?
1H-Indole-5,6-diol
What does it do?
Dihydroxyindole is listed in the EU cosmetic ingredient inventory with the following declared functions:
-
Hair dyeing
colours hair, either by depositing pigment on the surface or by chemically altering the hair's natural pigment
EU regulatory status
This ingredient is restricted in the European Union.
Dihydroxyindole is listed under Annex III of EU Cosmetics Regulation 1223/2009 (entry 207). It is permitted only under specific conditions, concentration limits, or in particular product types.
Notes: Annex
Frequently asked questions
What is Dihydroxyindole?
Dihydroxyindole is a cosmetic ingredient catalogued in the EU CosIng database. 1H-Indole-5,6-diol
Is Dihydroxyindole allowed in cosmetics in the EU?
Only with restrictions. Dihydroxyindole is permitted in EU cosmetics only under specific conditions defined in Annex III of Regulation 1223/2009.
What does Dihydroxyindole do in cosmetic products?
Dihydroxyindole is declared in the EU cosmetic ingredient inventory with these functions: hair dyeing.
What is the CAS number of Dihydroxyindole?
The CAS (Chemical Abstracts Service) number for Dihydroxyindole is 3131-52-0.
Related ingredients
Source: EU CosIng database (European Commission). This page is derived from public-sector information published by the European Commission. · Last updated: 06/06/2019