Science
Mechanism of Action
This ingredient operates by constructing a durable, continuous polymeric film upon application, which adheres to the skin, hair, or nails. This physical barrier contributes to surface smoothness and provides a conditioning effect, particularly noticeable in nail applications.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
The inherent isocyanurate ring structure provides robust thermal stability. However, successful formulation critically depends on the absence of residual, highly reactive HDI monomer, which could otherwise interact adversely with alcohols, acids, amines, or water, potentially leading to decomposition.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel assessed TRIS-HEA/HDI ISOCYANURATE TRIMER within a group of HDI polymers, concluding its safety for cosmetic use under current practices and concentrations. This safety determination is contingent upon ensuring the absence of significant residual isocyanate monomers in the final product. While HDI monomers are recognized occupational irritants and sensitizers, the CIR Panel expressed confidence that such reactive residues are not present in cosmetic-grade polymers. Additionally, a structurally similar polymer demonstrated non-irritating dermal effects in rabbit studies.
Your Skin
Skin Compatibility
Our Assessment
Verdict
TRIS-HEA/HDI ISOCYANURATE TRIMER serves as a reliable film-forming agent, particularly beneficial for enhancing nail appearance and contributing to product texture when formulated with strict control over residual monomers.
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References
Sources