Science
Mechanism of Action
Polyurethane-60 operates by effectively blending immiscible oil and water phases, thereby stabilizing emulsions. On the skin, it contributes to hydration, imparting increased softness and elasticity while visibly reducing skin roughness. It forms a resilient protective film on the surface, which helps to shield the skin from external aggressors such as solar radiation, cold temperatures, and urban pollution, consequently aiding in sustained moisture retention.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Polyurethane-60 is supplied as an aqueous, low viscosity, anionic dispersion of polycarbonate-polyurethane, characterized by a mean molecular weight exceeding 50,000 Daltons.
Conflicts
- Sensitizers (e.g., Methylisothiazolinone), if present as impurities or co-formulated components within the raw material dispersions of the polymer. Cumulative concentrations of such sensitizers must be avoided.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel concluded that Polyurethane-60 and related polyurethane ingredients are safe for cosmetic use when formulated to be non-sensitizing. The panel confirmed the absence of detectable residual isocyanates or other monomers in these ingredients. Formulators are advised to ensure that raw material dispersions containing Polyurethane-60 do not introduce sensitizers, such as Methylisothiazolinone, in significant concentrations.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Polyurethane-60 is a valuable multi-functional polymer that enhances emulsion stability, effectively moisturizes skin, and provides essential environmental protection, having been deemed safe for cosmetic use by the CIR Expert Panel.
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References
Sources