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Colorant

ZINC

CAS 7440-66-6
70

Safety score · 0–100

Fine

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

Elemental zinc metal used as a colorant or processing aid. Skin tolerance is good for finished products; raw powder can irritate eyes and lungs and is hazardous to aquatic life if released untreated.

Function

ANTIOXIDANT

Skin benefits

  • Essential trace mineral
  • Pigment/colorant in some uses
  • Astringent
  • Antimicrobial in some forms

Known concerns

  • Metallic zinc dust is a respiratory hazard
  • Aquatic toxicity concerns
  • Rare topical irritation

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.