Ingredient

4-Hydroxyindole

✓ EU Allowed

Identification

CAS Number 2380-94-1
EINECS / EC 219-177-2
CosIng Ref 41702
Chemical Name 1H-indol-4-ol
IUPAC Name
Formula C8H7NO
Mol. Weight 133.15 g/mol
InChIKey NLMQHXUGJIAKTH-UHFFFAOYSA-N

Function & Classification

Primary Function Hair Dyeing
Origin Synthetic
Category Colorants & Pigments

EU Regulatory Status

🇪🇺
✓ Allowed — EU Reg. 1223/2009 II/1220

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

Suppliers & Documents

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Documents

External Resources