Science
Mechanism of Action
This ingredient functions primarily as a binder and anti-caking agent, which contributes to a compact and smooth product consistency. Upon application, it forms a subtle film on the skin, enhancing slip, minimizing tackiness, and effectively absorbing excess oil. Given the broader properties of polyurethanes, it is also suggested to support skin hydration by forming a protective barrier against environmental aggressors, potentially aiding in emulsification.
Research
Clinical Evidence
Insufficient-data confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
This crosspolymer demonstrates good stability under normal storage conditions and is not anticipated to undergo significant hydrolysis within a pH range of 4 to 9.
Conflicts
- strong acids
- certain ketones
- aromatic hydrocarbons
- formulations containing sensitizers such as methylisothiazolinone (MI)
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel, in a 2017 assessment, deemed 66 polyurethane ingredients, including those derived from isocyanates like HDI polymers, safe for use in cosmetics. This conclusion is contingent on the ingredients being formulated to be non-sensitizing and free from significant residual isocyanate monomers. While exposure to unreacted isocyanates can pose risks, the CIR panel confirmed their absence in the reviewed cosmetic materials. Manufacturers are advised to employ Good Manufacturing Practices (GMPs) to mitigate heavy metal impurities.
Your Skin
Skin Compatibility
Our Assessment
Verdict
This crosspolymer is a valuable multi-functional ingredient, significantly enhancing product texture, wear, and sensory feel, while also offering potential skin benefits with a favorable safety profile.
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