Science
Mechanism of Action
As a film-forming agent, Isostearoyl Epoxy Resin functions by depositing a contiguous, uniform layer onto the treated surface. This polymeric film establishes a physical barrier that can contribute to properties such as product wear resistance and mild occlusivity, sealing in moisture or active ingredients.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
While specific stability data for Isostearoyl Epoxy Resin in cosmetic formulations is not extensively documented, related polymeric resins in industrial contexts often demonstrate broad pH stability, typically within a range of pH 2 to 13.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel currently lists Isostearoyl Epoxy Resin as having 'insufficient data' for a complete safety assessment, as of September 2023. This ingredient is an isostearic acid ester of a 4,4'-isopropylidenediphenol/epichlorohydrin copolymer, possessing a minimum molecular weight of 1012 Da. While industrial uncured epoxy resins are recognized irritants and sensitizers, the cosmetic form is a copolymer, suggesting a reacted, cured state generally considered non-irritating. Further comprehensive data is needed to confirm its safety profile in cosmetic applications.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Despite its recognized film-forming capability, comprehensive safety and efficacy data for Isostearoyl Epoxy Resin in cosmetic applications are presently insufficient, warranting caution and further research.
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References
Sources