Dihydroxy indoline, Dihydroxy indoline HBr in EU cosmetics: Annex III, entry 204
Dihydroxy indoline, Dihydroxy indoline HBr: maximum concentration in ready for use preparation by product type: Hair dye substance in non-oxidative hair dye products: 2,0 %. Annex III, entry 204, Regulation (EC) No 1223/2009, consolidated 18 May 2026.
- Annex
- III: List of substances which cosmetic products must not contain except subject to the restrictions laid down
- Reference number
- 204
- Chemical name/INN
- 2,3-Dihydro-1H-indole-5,6-diol and its hydrobromide salt (17)
- Name of Common Ingredients Glossary
- Dihydroxy indoline, Dihydroxy indoline HBr
- CAS number
- 29539-03-5 / 138937-28-7
- EC number
- - / 421-170-6
- Version
- Consolidated version of 18 May 2026
- Official source
- Regulation (EC) No 1223/2009, consolidated text
Official wording: restrictions
- Product type, body parts: Hair dye substance in non-oxidative hair dye products | Maximum concentration in ready for use preparation: 2,0 %
Official wording: conditions of use and warnings
Can cause allergic reaction
Notes referred to in this entry
- (17) The free base and salts of this hair colouring ingredient, unless prohibited under Annex II, are permitted for use.
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