Science
Mechanism of Action
This unique hybrid molecule leverages its p-methoxycinnamoyl group to function as a potent UV absorber, providing direct photoprotective effects. It synergistically boosts the efficacy of other sunscreen components, elevating the overall SPF. Additionally, its antioxidant capabilities prevent cellular damage by inhibiting oxygen-promoted reactions, and its film-forming properties create a continuous, protective barrier on the skin's surface.
Research
Clinical Evidence
Medium confidence10%
Key findings
- 01 A 10% cream demonstrated robust photoprotective effects, significantly increasing human fibroblast cell viability and suppressing p53 protein expression after UV exposure. In hairless mouse skin, it reduced sunburn cells and mast cell presence. Furthermore, on human skin, it achieved higher or comparable SPF values to formulations containing 5% titanium dioxide and 5% ethylhexyl methoxycinnamate, with no observed side effects such as erythema, edema, itch, or tingling.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Polysilsesquioxanes are known for their high thermal, chemical, and physical stability. While a cream containing this ingredient maintained its SPF after UV exposure, ensuring the complete photostability of an entire formulation may require additional evaluation under higher UV doses.
Synergies
- Other sunscreen agents (SPF boosting)
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has deemed polysilsesquioxane ingredients, including this one, safe for use in cosmetics under current practices. While a specific maximum concentration for Methoxycinnamidopropyl Polysilsesquioxane is not provided, other polysilsesquioxanes have been reported in concentrations up to 55.2% in makeup and 4.9% in foundations. Clinical studies at 10% showed no adverse reactions.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Methoxycinnamidopropyl Polysilsesquioxane is a valuable ingredient for advanced skincare, offering multifaceted photoprotection, SPF boosting, and antioxidant benefits with excellent safety and low irritation potential.
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References
Sources