Science
Mechanism of Action
No information on its mechanism of action on skin is available.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
There is no information to suggest this copolymer is commonly used or dusted in cosmetic formulations, as it is not identified as a common cosmetic ingredient.
The Formula
Formulation
Stability
The specific solubility and stability of this copolymer are not well-defined for skincare applications. Its constituent monomers exhibit varied behaviors: Hexamethylenediamine is water-soluble with a highly alkaline pH (12.4 for a 5 wt% solution), while MDI reacts with water to form insoluble polyurea species. The exact characteristics of the copolymer would depend on its specific polymeric structure.
Safety
Safety Profile
This specific copolymer has not undergone safety assessment by the CIR or SCCS for cosmetic use. Its monomer, Methylene Diphenyl Diisocyanate (MDI), is a known dermal and inhalation sensitizer, potentially causing irritation, asthma, and lung damage in its uncured form or at high exposure levels. The European Union mandates specific warnings for consumer products containing 0.1% or more MDI, and requires protective gloves. While other diisocyanate polymers have been deemed safe in cosmetics with precautions for residual monomer content, no direct safety data exists for HEXAMETHYLENEDIAMINE/MDI COPOLYMER in this context.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Given its industrial origin, lack of cosmetic safety assessment, and the known sensitizing properties of its MDI monomer, this ingredient is not recommended for skincare formulations.
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References
Sources