Malachite extract is a copper-rich mineral-derived ingredient used in skincare for its antioxidant and purported detoxifying properties, often promoted for its copper content that may support skin defense against environmental stressors. Evidence for significant clinical benefit is limited, and it is typically used at low concentrations.
| Reported effect | How often | Notes |
|---|---|---|
Contact irritation (redness, stinging) | Uncommon | May occur in sensitive skin, particularly at higher concentrations. |
Allergic contact dermatitis | Rare | Possible sensitization to copper or formulation components. |
Temporary skin discoloration | Very rare | Greenish tint reported with high copper-content preparations. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.