Science
Mechanism of Action
Operating primarily as a film-former, POLYURETHANE-86 creates an invisible, flexible layer on the skin, which can contribute to moisture retention and environmental protection. Its binding properties help to effectively integrate other ingredients within a formulation, while its surface-modifying capabilities contribute to a smoother product application and feel. In applications beyond cosmetics, such as wound dressings, certain polyurethanes have demonstrated the ability to facilitate adhesion and support tissue regeneration.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
While specific optimal pH ranges for POLYURETHANE-86 are not available, the hydrolytic stability of polyurethanes generally varies with pH. Polyester-based polyurethanes tend to exhibit reduced stability in acidic conditions, whereas polyether-based variants may show greater stability in basic environments. This ingredient is typically supplied as a waterborne dispersion, indicating its design for stable integration within aqueous systems through hydrophilic or ionic modifications.
Conflicts
- Residual diisocyanate monomers, if present, are recognized irritants and sensitizers.
- Extreme pH conditions, such as strong acids (e.g., 50% Sulfuric Acid) or strong bases (e.g., 5% Sodium Hypochlorite, 40% Sodium Hydroxide), and certain organic solvents (e.g., xylene, gasoline), may lead to slight swelling or discoloration based on general polyurethane chemical compatibility.
- Accumulation of sensitizers from multiple raw material sources, such as methylisothiazolinone (MI) often present in supplier polyurethane dispersions, should be carefully monitored to avoid exceeding safe concentration limits.
Safety
Safety Profile
The CIR Expert Panel has concluded that POLYURETHANE-86, along with 65 other polyurethane ingredients, is safe for cosmetic use under current practices and concentrations. This assessment is contingent upon the absence of detectable residual isocyanate or other monomeric impurities from the manufacturing process, which are known to be irritating or sensitizing. Formulators are also advised to exercise caution regarding the total concentration of sensitizers, such as methylisothiazolinone (MI), that may be present in commercial polyurethane dispersions from suppliers.
Your Skin
Skin Compatibility
Our Assessment
Verdict
POLYURETHANE-86 is a valuable film-forming and binding agent that enhances product texture and performance, deemed safe for cosmetic use when carefully formulated to be free of sensitizing impurities.
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