2,3-Dihydro-1H-indole-5,6-diol and its hydrobromide salt (see note 17).
⚠ EU RestrictedIdentification
CAS Number 29539-03-5 - 138937-28-7
EINECS / EC - - 421-170-6
CosIng Ref 87808
Function & Classification
Primary Function HAIR DYEING
EU Regulatory Status
Max Leave-on 2%
Conditions of Use - 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
SCCS Opinion View SCCS opinion →
Safety Profile
No toxicology data available yet for this ingredient.
Check SCCS opinions or CIR reports for published safety assessments.
NOAEL · Dermal Absorption % · Sensitization
Formulation Guidelines
Usage level, pH range, solubility and addition phase not yet available.
Usage Level % · Addition Phase · Solubility
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