Science
Mechanism of Action
The ingredient operates by polymerizing upon application, forming a protective, continuous film on the skin, hair, or nails. This physical barrier can provide various benefits, from environmental protection to enhancing product longevity on the surface.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Specific stability data for the crosspolymer itself is currently unavailable. However, a component, Guanidine Carbonate, typically remains stable for at least 2 years under standard conditions, though extended storage beyond 2 months may lead to hardening and reduced pourability.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has concluded this ingredient, along with similar Hexamethylene Diisocyanate (HDI) polymers, is safe under current usage practices and concentrations. This assessment is supported by its large molecular weight, which minimizes skin penetration, and the documented low levels of residual isocyanate monomers. A related HDI polymer has been safely used in leave-on formulations at concentrations reaching up to 31%.
Your Skin
Skin Compatibility
Our Assessment
Verdict
This film-forming crosspolymer effectively creates a protective barrier on the skin, exhibiting a low irritancy profile and deemed safe for use in concentrations up to 31% by the CIR Expert Panel.
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References
Sources