Science
Mechanism of Action
As a film-forming polymer, Polyurethane-34 establishes a flexible, non-adhesive layer on the skin or hair surface. This layer primarily functions as a binding agent, integrating powdered components within a formulation, while also creating a protective or styling film that contributes to product performance and sensory feel.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Polyurethane-34 exhibits robust stability within a pH range of 6.0 to 8.0. It is readily dispersible in water and soluble in various solvents. Data suggests stability at temperatures between 5°C and 50°C for up to 3 years under typical storage conditions, indicative of the broader polyurethane class.
Safety
Safety Profile
Polyurethane-34 is considered safe for topical cosmetic application, having received approval from regulatory bodies such as the European Commission (COSING). The Cosmetic Ingredient Review (CIR) Expert Panel assessed polyurethanes as a class, deeming them safe for use. It is categorized as low hazard, with no significant concerns for irritation or sensitization at typical concentrations. The presence of residual diisocyanate monomers is a key consideration in its safety profile, and SkinSAFE lists Polyurethane-34 as irritant-free.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Polyurethane-34 is a valuable synthetic polymer, safely employed as a film former and binding agent to enhance product texture, stability, and wear, demonstrating a low risk of irritation across various applications.
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References
Sources