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Heavy metal (restricted)

Cobalt

CAS 7440-48-4
6

Safety score · 0–100

Avoid

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

Metallic cobalt is classified as a carcinogen, reproductive toxin, and strong skin and respiratory sensitizer. It is not permitted as a cosmetic ingredient and is restricted as a contaminant.

Skin benefits

  • Listed only as a chemical entity; no legitimate cosmetic functional role at relevant exposures
  • Used industrially as a pigment intermediate and in alloys

Known concerns

  • GHS H350: may cause cancer
  • H360F: may damage fertility
  • H334/H317: respiratory and skin sensitizer; well-documented contact allergen
  • H341: suspected mutagen
  • Subject to strict EU regulatory limits and not permitted as a cosmetic ingredient

References

EU

EU CosIng database

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

Check your shelf

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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.