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Colorant

PIGMENT RED 5

CAS 6410-41-9
42

Safety score · 0–100

Moderate

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

A naphthol-class red pigment used in cosmetics. Falls outside the EU Annex IV positive list, raising safety questions, so it's lower-tier in cosmetic use.

Function

HAIR DYEING

Skin benefits

  • Bright red pigment for cosmetics
  • Light-fast colorant
  • Used in nail and lip products

Known concerns

  • Naphthol AS pigment, possible aniline impurities
  • Limited cosmetic safety dossier
  • Possible sensitization
  • Not on EU Annex IV positive list

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.