Science
Mechanism of Action
This root extract exerts its effects through several pathways: it mitigates inflammation by inhibiting pro-inflammatory mediators such as histamine and leukotrienes, while also reducing cytokine release induced by microbial presence (e.g., Staphylococcus aureus) and neuropeptides like substance P. Its rich content of flavonoids and alkaloids provides robust antioxidant defense, neutralizing free radicals and protecting against environmental stressors. It also demonstrates broad-spectrum antimicrobial action, including antibacterial effects against Propionibacterium acnes and antifungal activity against various Candida species, often by disrupting microbial cell membranes. Additionally, it bolsters the skin barrier by promoting cornified envelope formation and stimulating hyaluronic acid synthesis, and may contribute to sebum balance and skin tone uniformity.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 Clinical data indicates the extract supports skin barrier function by enhancing cornified envelope formation and elevating hyaluronic acid production, offering benefits for conditions like atopic dermatitis. It also demonstrates the ability to inhibit pro-inflammatory cytokines triggered by Staphylococcus aureus and substance P.
- 02 In vitro, the extract exhibited significant antifungal efficacy against various Candida species, with minimum inhibitory concentrations (MICs) ranging from 6.25 to 25 mg/mL.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Optimal pH range for stability is currently unknown. Modern purification techniques are employed to enhance the purity, efficacy, and stability of the extract.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) has included Sophora Flavescens Root Extract on its 2024 Final Priorities List for comprehensive safety assessment. While acute oral toxicity studies in mice (9.0 g/kg) and 13-week sub-chronic oral studies in rats (up to 1200 mg/kg) suggest practical non-toxicity, EWG identifies a low-moderate concern for potential endocrine disruption based on in vitro rat uterine estrogen receptor binding. However, it is rated 'Irritant Free' by SkinSAFE and 'LOW' for allergies and immunotoxicity by EWG, suggesting a low topical sensitization risk.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Sophora Flavescens Root Extract is a valuable multi-active ingredient due to its potent anti-inflammatory, antioxidant, and skin barrier-enhancing properties, making it beneficial for sensitive and compromised skin; however, its reported high comedogenicity from certain databases warrants careful formulation consideration, especially for acne-prone individuals despite its antimicrobial benefits.
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