Science
Mechanism of Action
This botanical extract exerts its effects through a diverse array of phytochemicals, including scoparone, tricin, protocatechuic acid, luteolin, anemonin, scopoletin, and various flavonoids. Protoanemonin, a compound inherently present in the fresh plant, is described as an irritant. However, it polymerizes to form anemonin, which is considered a non-irritant. The identified compounds are believed to be responsible for the extract's observed anti-inflammatory, antioxidant, and antibacterial activities.
Research
Clinical Evidence
Low confidenceN/A
Key findings
- 01 In animal models, Ranunculus japonicus extract has demonstrated both analgesic and anti-inflammatory effects. One study also indicated its ability to inhibit the migration capacity of rheumatoid arthritis fibroblast-like synoviocytes.
- 02 Extracts from Ranunculus species have exhibited antibacterial activity against tested bacteria, with minimal inhibitory concentrations (MICs) ranging between 128 and 256 µg/mL.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Specific optimal pH ranges or stability guidelines for Ranunculus japonicus extract in cosmetic formulations are not available. As with many plant extracts, its stability may be influenced by pH, temperature, and light exposure. Extraction methods indicate the presence of compounds with varying polarities, suggesting solubility in both aqueous and organic solvents.
Safety
Safety Profile
Ranunculus japonicus extract has not undergone formal safety review by the Cosmetic Ingredient Review (CIR) Expert Panel and is not listed on their priority lists. Paula's Choice categorizes it as 'Unclassified' and 'Not rated', highlighting a lack of comprehensive safety data for cosmetic use. Historically, topical application of the fresh plant has been linked to irritation, redness, swelling, and blistering, primarily attributed to protoanemonin. While protoanemonin dimerizes into anemonin, considered a non-irritant form, the overall safety of the extract in cosmetic formulations depends critically on the absence or controlled levels of protoanemonin and the concentration of anemonin. INCIDecoder also rates its irritancy as high.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Despite demonstrating potential anti-inflammatory and antibacterial properties in non-human studies, the lack of comprehensive safety data for cosmetic use, coupled with a high irritancy rating and concerns regarding the irritant protoanemonin, makes Ranunculus japonicus extract a questionable ingredient for skincare formulations.
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