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Skin Conditioning

COPPER GLUCONATE

CAS 527-09-3 Updated
72

Safety score · 0–100

Fine

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

About

The copper salt of gluconic acid — a bioavailable form of copper used to support collagen-related claims and as a mild preservative booster. Generally well-tolerated topically.

Skin benefits

  • Trace mineral linked to collagen synthesis
  • Antimicrobial and antioxidant
  • Used in healing-claim products

Known concerns

  • Can stain skin or fabric green at high %
  • Skin sensitization possible in copper-allergic users

References

EU

EU CosIng database

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

PC

PubChem

U.S. NIH compound data, GHS hazard codes and toxicity literature.

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.