Science
Mechanism of Action
This ingredient operates by establishing a durable, protective barrier on the skin's surface. This polymeric film significantly enhances the skin's inherent water resistance, thereby extending the active period of other ingredients and generally improving product performance. Beyond protection, it also helps to foster skin hydration and imparts a notable sensation of softness.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Polyurethane-96 typically maintains stability under standard storage and handling conditions, requiring avoidance of extreme temperatures. Its urethane bond structure is recognized for its robustness in physiological environments.
Conflicts
- strong acids (e.g., concentrated sulfuric acid)
- some ketones (e.g., acetone, which may induce slight swelling)
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has deemed polyurethanes, including POLYURETHANE-96, as safe for use in cosmetic formulations, provided they are formulated to be non-sensitizing. Formulators are advised to exercise caution regarding potential sensitizers, such as methylisothiazolinone (MI), which may be present in raw material emulsions or solutions of polyurethanes. Careful management of these co-formulated sensitizers is crucial to prevent accumulation to significant concentrations.
Your Skin
Skin Compatibility
Our Assessment
Verdict
POLYURETHANE-96 is a valuable ingredient for enhancing product performance through film-forming and water-resistance capabilities, contributing to skin hydration and softness, with a CIR-confirmed safe-as-used status that necessitates careful attention to co-formulated sensitizers.
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References
Sources