Science
Mechanism of Action
This ingredient actively reduces UV and particulate matter-induced oxidative stress and cellular inflammation by downregulating key cytokines and inhibiting MMPs. It significantly decreases melanin synthesis by reducing tyrosinase activity and MITF expression, while also promoting type I collagen restoration for improved skin integrity.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 Decreased mRNA levels of SCF/ET-1, reduced melanin content, lowered intracellular oxidative stress, attenuated ROS from particulate matter, and inhibited inflammatory cytokines (IL-8, TNF-α, IL-1α) and MMP-1/3 expression. Also reduced tyrosinase activity and MITF/tyrosinase expression.
- 02 Further lowered melanin content (equivalent to arbutin), attenuated PM-induced ROS, downregulated proinflammatory cytokines, and significantly reduced MITF/tyrosinase mRNA and protein expression.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Ursodiol suspensions remain physically and chemically stable for over 6 months at both refrigerated and room temperatures, with consistent pH values. It is insoluble in water, requiring specific formulation considerations.
Safety
Safety Profile
While FDA-approved for oral medical use, there is no specific FDA status or established maximum concentration for topical cosmetic application. Patch testing is recommended, though topical side effects like irritation are uncommon. Data on pregnancy/breastfeeding are lacking.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Ursodiol exhibits robust in-vitro antioxidant, anti-inflammatory, and melanin-inhibiting properties, making it a valuable ingredient for advanced skin protection and brightening, with ongoing development for topical efficacy.
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References
Sources