Science
Mechanism of Action
The extract's anti-inflammatory properties are linked to compounds like scopoletin, kaempferol, squalene, and cycloartenol. Its antioxidant activity is facilitated by phenolic compounds such as narcissin, gallocatechin, rutin, epigallocatechin, and epicatechin, which effectively scavenge free radicals. Traditionally, it has been associated with mitigating skin dark spots, potentially through the action of mequinol, and also exhibits antimicrobial characteristics.
Research
Clinical Evidence
Low confidenceN/A
Key findings
- 01 An aqueous leaf extract at 10% concentration demonstrated a 25% reduction in erythema in rabbit models over a placebo.
- 02 An ethanol extract, at a concentration equivalent to 0.03811% (381.1 µg/mL), exhibited 61.3% DPPH radical scavenging activity in vitro, indicating antioxidant potential.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Research indicates solubility in water and polar organic solvents, with aqueous, ethanolic, and methanolic extracts commonly studied. Specific optimal pH ranges for cosmetic stability remain undefined.
Safety
Safety Profile
The safety of Mercurialis Annua Extract for cosmetic use is not formally established, with no specific CIR, SCCS, or FDA cosmetic safety assessments available. The parent plant, Mercurialis annua, is classified as poisonous to livestock; ingestion can induce severe gastrointestinal and renal damage in mammals. While topical application of a 10% aqueous leaf extract showed an anti-inflammatory effect in rabbit models, traditional poultice applications were typically limited to 20 minutes, which suggests potential for irritation or other adverse effects with prolonged skin contact. Extreme caution is therefore advised for its inclusion in leave-on cosmetic formulations.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Despite some preclinical evidence of anti-inflammatory and antioxidant activity, the extract's use in cosmetic formulations is highly questionable due to the plant's known systemic toxicity upon ingestion and a significant lack of comprehensive cosmetic safety data for topical application.
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References
Sources