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Hair Conditioning

2,6-DIHYDROXYETHYLAMINOTOLUENE

CAS 149330-25-6
22

Safety score · 0–100

Caution

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

A toluene-diamine derivative used as an oxidative hair-dye precursor. EU caps it at low % in dyed hair products and warns against eyebrow/eyelash use due to sensitization.

Function

HAIR DYEING

Skin benefits

  • Oxidative hair-color coupler

Known concerns

  • Aromatic diamine class — strong skin sensitizer
  • SCCS-restricted oxidative dye precursor
  • EU concentration cap on dyed hair
  • Not for eyebrow/eyelash use

References

EU

EU CosIng database

European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve, so always read the physical product label and consult a healthcare professional for personal concerns.