- - 421-170-6

EU cosmetic ingredient records linked to EC number - - 421-170-6.

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Annex

III

Entry

204

DIHYDROXYINDOLINE

2,3-Dihydro-1H-indole-5,6-diol and its hydrobromide salt (see note 17).

- Can cause allergic reaction - You have ever experienced any reaction afther colouring your hair - You have experienced a reaction to a temporary 'black henna' tattoo in the past

CAS

29539-03-5 - 138937-28-7

Max concentration

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An EC number is an identifier used for substances listed in European chemical inventories. It can help connect cosmetic ingredient records and related reference information.

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