Science
Mechanism of Action
Upon application, POLYURETHANE-35 establishes a resilient film on the skin's surface. This film provides a physical barrier, which enhances the longevity and water resistance of formulations. Concurrently, it contributes to sustained skin moisture, mitigating roughness, and offers protection against environmental stressors such as UV radiation, cold, and pollution. Additionally, it refines formulation aesthetics, imparting a smooth, silky skin feel. In anhydrous formulations like powders, it functions as a binding agent, ensuring structural integrity.
Research
Clinical Evidence
Low confidenceN/A
Key findings
- 01 Slight irritating effect to the skin of rabbits, reversible within 7 days; not corrosive to human skin cells in an in vitro dermal corrosion assay.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
POLYURETHANE-35 exhibits robust stability under standard environmental conditions and maintains integrity within cosmetic formulations at concentrations ranging from 5% to 15%. Its stability is optimal within a pH spectrum of 4.5 to 7.0.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has affirmed POLYURETHANE-35 as 'safe in the practices of use and concentration of this safety assessment.' While a 40% solution induced slight, transient irritation in a rabbit skin study, it did not demonstrate corrosive potential in human skin cells in an in vitro assay. Rigorous regulatory oversight by agencies such as the EU and FDA addresses the critical concern of residual diisocyanate monomers, which are known irritants, ensuring the ingredient meets strict safety benchmarks.
Your Skin
Skin Compatibility
Our Assessment
Verdict
POLYURETHANE-35 is a valuable film-forming polymer that enhances product longevity and water resistance while supporting skin hydration and barrier function across diverse skin types.
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References
Sources