Science
Mechanism of Action
Polyurethane-35 functions by creating a resilient, non-occlusive polymeric film on the skin's surface. This film profoundly enhances the water resistance of cosmetic formulations, thereby extending the residence time and performance of active ingredients. Beyond its protective capacity, PEI-35 refines the texture of the product and the skin, delivering a smooth and silky tactile experience. It actively supports skin moisture retention, contributing to reduced roughness and improved overall softness, while also serving as a shield against environmental aggressors such as UV radiation, cold, and atmospheric pollutants.
Research
Clinical Evidence
Medium confidence7%
Transparency
Dusting Analysis
No data available regarding dusting behavior.
The Formula
Formulation
Stability
Polyurethane-35 maintains stability within a pH range of 4.5-7.0. It is robust under normal environmental conditions and is not anticipated to degrade in cosmetic products when used at concentrations between 5-15%. Comprehensive stability testing indicates it remains stable for 3 years when stored at temperatures ranging from 5-50°C.
Safety
Safety Profile
Globally recognized as safe for use in cosmetic and personal care products following extensive testing and regulatory approval. The safety assessment highlights the critical importance of evaluating and controlling for the presence of residual diisocyanate monomers to ensure product purity and consumer safety.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PEI-35 is a valuable polymeric ingredient for precision skincare, enhancing product longevity, skin texture, and environmental protection across diverse formulations.
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References
Sources