Science
Mechanism of Action
This ingredient operates by forming a breathable, yet occlusive film on the skin. This physical barrier effectively reduces transepidermal water loss, promoting skin hydration and suppleness. Additionally, it provides a protective shield against environmental stressors and acts as a plasticizer, improving the wear and flexibility of cosmetic formulations.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that Polyurethane-58, along with other polyurethanes, is safe for use in cosmetic formulations, provided it is precisely manufactured to be non-sensitizing. A critical safety consideration pertains to the potential presence of residual diisocyanate monomers. These compounds are known to be associated with irritant and allergic contact dermatitis, as well as irritation of the skin and conjunctiva in occupational settings. Therefore, adherence to stringent formulation and manufacturing protocols is paramount to mitigate these risks.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Polyurethane-58 is a valuable film-forming and skin-conditioning polymer, offering protective and occlusive benefits, particularly for dry skin, provided its manufacturing adheres strictly to safety standards regarding residual monomers.
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References
Sources