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A copper salt of usnic acid, derived from lichens. It is primarily used for its antimicrobial and preservative properties in cosmetic formulations.
Beneficial for
Safety summary
Can be a skin sensitizer for some individuals. Regulatory restrictions may apply in some regions due to potential for irritation or sensitization.
CAS Number
94246-73-8
1% line marker
This ingredient is commonly used as a marker to identify where ingredients drop below 1% concentration on the label.
For informational purposes only. This is not medical advice. Always patch test new products and consult a dermatologist for skin concerns.