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Silver nitrate

CAS 7761-88-8
22

Safety score · 0–100

Caution

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

About

Silver Nitrate is a cosmetic ingredient. Exercise caution due to limited available safety data.

Silver nitrate (CAS 7761-88-8) is an inorganic silver salt historically used in cosmetic formulations for its antimicrobial properties and in anti-aging products. EU Regulation 1223/2009 Annex III restricts its use to a maximum concentration of 4% in cosmetic products. Chronic topical use can cause argyria (irreversible blue-gray skin discoloration from silver deposition) and argyrosis (silver deposition in eyes). The nitrate component raises concerns about methemoglobinemia in infants. Silver nanoparticles in cosmetics are under ongoing safety review.

Skin benefits

  • Antimicrobial properties for cosmetic preservation
  • Used in leather cosmetic accessories coloring
  • Historical use in anti-aging formulations

Known concerns

  • Maximum 4% concentration limit in EU
  • Argyria risk from chronic topical use (irreversible skin discoloration)
  • Argyrosis (ocular silver deposition)
  • Nitrate component toxicity concern
  • Ongoing review of nanosilver safety

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 — always read the physical product label and consult a healthcare professional for personal concerns.