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Banned Substance

COPPER

CAS 7440-50-8
28

Safety score · 0–100

Caution

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

Elemental copper — EU Annex II banned for use in cosmetics. Note: this is the unbound metal, not the safe peptide-chelated forms (copper peptides) seen in serums. Free copper is a pro-oxidant irritant.

Skin benefits

  • Catalytic role in some peptide complexes when properly bound

Known concerns

  • EU Annex II banned as elemental copper for cosmetics
  • Pro-oxidant and irritant in unbound form
  • Free copper ions catalyze ROS damage
  • Only chelated/peptide-bound forms are cosmetically acceptable

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.