6-Hydroxyindole
AKA “2380-86-1, 1H-indol-6-ol, IMEXINE OBA, 3I03JZ599T, DTXSID20178497, RefChem:104788, DTXCID50100988, 417-020-4, 6-indolol”
Ingredient
Ingredient Facts
6-Hydroxyindole
AKA: 2380-86-1, 1H-indol-6-ol, IMEXINE OBA, 3I03JZ599T, DTXSID20178497, RefChem:104788, DTXCID50100988, 417-020-4, 6-indolol
Ingredient · Hair Dyeing · EWG: 7
Synthetic
Not Clean
structure in first source
Formula
C8H7NO
Mol. Weight
133.15
CAS #
2380-86-1
Form
Powder
See origin →
Functions
Hair Dyeing
Colors Hair
Traditional Use
Synthetic precursor compound developed for hair coloring applications in the 20th century, used in oxidative hair color systems as a color-generating intermediate.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Caution
Safety assessment of 6-hydroxyindole as used in cosmetics.
Burnett CL, Heldreth B, Bergfeld WF, Belsito DV, Hill RA et al.
International journal of toxicology, 2014
Safety Assessment of 6-Hydroxyindole as Used in Cosmetics
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
6-Hydroxyindole
European Commission
EU Cosmetic Ingredient Database (CosIng)
6-Hydroxyindole
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Verified Jun 2026 · 🧪 = conflict
Data: PubChem · CosIng · EWG · CIR