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Antimicrobial

USNIC ACID

CAS 125-46-2 Updated
50

Safety score · 0–100

Moderate

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

About

A lichen-derived antimicrobial used in deodorants and natural preservation. Topical use is generally tolerated but it is a documented sensitizer and was withdrawn from oral supplements over liver toxicity.

Function

ANTIMICROBIAL

Skin benefits

  • Antibacterial
  • Anti-acne adjunct
  • Natural preservative

Known concerns

  • Hepatotoxicity (oral) — FDA warning
  • Skin sensitization
  • Photosensitivity
  • EU restrictions

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.