Science
Mechanism of Action
As a member of the polyurethane family, POLYURETHANE-19 operates by forming a flexible, uniform film upon application to the skin. This film acts as a physical barrier, which not only assists in reducing transepidermal water loss to maintain hydration and softness but also serves as a surface modifier and binder, contributing to product stability and skin protection against external aggressors.
Research
Clinical Evidence
Insufficient-data confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
While specific stability data for POLYURETHANE-19 is not available, polyurethanes as a class demonstrate varying solubility and generally exhibit stability across wide pH ranges (e.g., some noted stable from pH 2-12, others between pH 4-9).
Conflicts
- Potential for increased sensitizer concentration (e.g., methylisothiazolinone) if combined with other raw materials supplied as emulsions or solutions containing these agents.
- Certain general polyurethanes may exhibit slight swelling or discoloration when exposed to chemicals such as acetone, xylene, strong acids, or chlorine bleach, depending on concentration and temperature.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has evaluated Polyurethane-19, alongside 65 related polyurethane ingredients, concluding their safety for cosmetic use under current practices and concentrations. This safety assessment is contingent on formulations being non-sensitizing and free from detectable residual isocyanate or other monomeric impurities.
Your Skin
Skin Compatibility
Our Assessment
Verdict
POLYURETHANE-19 is a valuable film-forming agent known for its ability to hydrate skin, improve texture, provide environmental protection, and enhance product stability, with confirmed safety as assessed by the CIR Expert Panel.
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References
Sources