Antimicrobial
COPPER USNATE
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A copper salt of usnic acid, a lichen-derived antimicrobial. Effective against bacteria and fungi but a known contact sensitizer; usnic acid has documented hepatotoxicity in oral use.
Function
Skin benefits
- Antimicrobial against bacteria and fungi
- Lichen-derived natural ingredient
- Effective at low concentrations
Known concerns
- Usnic acid is hepatotoxic in oral exposure
- Documented contact sensitizer
- Can irritate sensitive skin
- Copper salt may add metal-driven irritancy
- Limited cosmetic safety reviews
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related antimicrobials
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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.