Isatin
A cosmetic ingredient used as hair dyeing in skincare, haircare, and personal-care products sold in the European Union.
What is it?
1H-Indole-2,3-Dione
What does it do?
Isatin 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.
Isatin is listed under Annex III of EU Cosmetics Regulation 1223/2009 (entry 210). It is permitted only under specific conditions, concentration limits, or in particular product types.
Notes: Annex
Frequently asked questions
What is Isatin?
Isatin is a cosmetic ingredient catalogued in the EU CosIng database. 1H-Indole-2,3-Dione
Is Isatin allowed in cosmetics in the EU?
Only with restrictions. Isatin is permitted in EU cosmetics only under specific conditions defined in Annex III of Regulation 1223/2009.
What does Isatin do in cosmetic products?
Isatin is declared in the EU cosmetic ingredient inventory with these functions: hair dyeing.
What is the CAS number of Isatin?
The CAS (Chemical Abstracts Service) number for Isatin is 91-56-5.
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