Science
Mechanism of Action
This polymer functions by forming a thin, cohesive film upon application, which helps to retain other ingredients and impart a smooth skin feel. Additionally, its molecular structure influences the flow and consistency of formulations, effectively controlling product viscosity. While related polyurethanes are studied for roles in wound healing, specific skin regeneration mechanisms for POLYURETHANE-73 in cosmetic contexts are not detailed.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Polyurethane-73 demonstrates stability across typical cosmetic pH ranges but can degrade in highly acidic environments (pH 1-3). When formulating waterborne polyurethane dispersions (PUDs) with other emulsions, it is advisable to match pH levels to ensure stability and prevent phase separation.
Conflicts
- Strongly acidic environments (pH 1-3) can induce degradation of urethane linkages.
- High concentrations of sensitizers, such as methylisothiazolinone (MI), if introduced via raw material components containing polyurethane, should be avoided to minimize potential sensitization risk.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has assessed a class of 66 polyurethane ingredients, concluding their safety in cosmetic applications when formulated to be non-sensitizing and free of residual isocyanates or monomers. A specific maximum concentration for POLYURETHANE-73 is not explicitly provided, but its class-wide safety profile is favorable under these conditions.
Your Skin
Skin Compatibility
Our Assessment
Verdict
POLYURETHANE-73 is a functional polymer valued for its film-forming and viscosity-controlling properties, enhancing product aesthetics and stability without providing direct active skin treatment benefits.
Related
Similar Ingredients
Finding similar ingredients…
References
Sources