Science
Mechanism of Action
POLYURETHANE-20 operates by establishing a continuous, ultra-thin film across the skin, which efficiently minimizes trans-epidermal water loss. This action significantly boosts skin hydration and reduces roughness, fostering a softer texture. Concurrently, this film acts as a physical shield, offering protection from external stressors such as sun, cold, and pollution, thereby supporting overall skin integrity.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
POLYURETHANE-20, likely a polyester-type polyurethane, demonstrates general stability. Related polyurethanes exhibit no significant hydrolysis within a pH range of 4 to 9. While generally resistant to oils, solvents, and weak acids/bases, polyester polyurethanes may degrade under strongly acidic pH conditions.
Conflicts
- strong oxidizing agents
- residual isocyanate monomers (must be undetectable in finished product)
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel concluded that POLYURETHANE-20, among 66 related polyurethane ingredients, is safe for use in cosmetic formulations. This safety assessment is predicated on the ingredient being non-sensitizing and containing no detectable residual isocyanate or other monomers. POLYURETHANE-20 is a complex polymer formed through a precise synthesis, meticulously capped with ethanol to ensure the complete elimination of residual isocyanate groups. Its use is regulated by both the European Union and the U.S. Food and Drug Administration (FDA) under strict safety protocols.
Your Skin
Skin Compatibility
Our Assessment
Verdict
POLYURETHANE-20 is a valuable film-forming polymer offering significant moisturizing and protective benefits, deemed safe for broad skin compatibility when precisely formulated to meet regulatory standards.
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References
Sources