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Hair Colorant

PEG-3 TOLUIDINE

CAS 103671-44-9
25

Safety score · 0–100

Caution

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

An ethoxylated toluidine used as a hair-dye intermediate. The toluidine family contains known carcinogens, so EU regulates use tightly and safer couplers are widely available.

Function

NAIL CONDITIONING

Skin benefits

  • Hair-dye intermediate / coupler

Known concerns

  • Toluidine family includes IARC-classified carcinogens
  • EU SCCS reviews tolerate only with strict use limits
  • Sensitization and contact-dermatitis risk
  • Safer hair-dye couplers exist

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.