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Antimicrobial

SILVER

CAS 7440-22-4
45

Safety score · 0–100

Moderate

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

Elemental silver used as an antimicrobial booster. Effective but tightly regulated — chronic exposure can cause permanent skin discolouration (argyria) and it is toxic to aquatic life.

Function

COLORANTDEODORANTSKIN CONDITIONING - MISCELLANEOUS

Skin benefits

  • Antimicrobial activity
  • Used as preservative booster in some formulas
  • Long traditional antimicrobial use
  • Effective against broad bacterial range

Known concerns

  • Argyria (skin discolouration) with prolonged exposure
  • Environmental toxicity to aquatic life
  • Restricted/limited in EU cosmetic preservatives
  • Nano-silver carries additional regulatory concerns

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.