Science
Mechanism of Action
This copolymer operates by forming a uniform, flexible film upon application, which can help to smooth the skin's surface, provide occlusive benefits, or serve as a structural component in formulations.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
A key component, methylhexahydrophthalic anhydride, undergoes slow decomposition when exposed to water, leading to the formation of acidic byproducts. This necessitates careful consideration for aqueous formulations and product longevity.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has determined that there is insufficient data to ascertain the safety of this ingredient, or the broader category of 'trimellitic anhydride copolymers' to which it is related, under typical cosmetic use conditions. The chemical definition of these copolymers was deemed largely undefined in the assessment, highlighting a gap in comprehensive safety information.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Due to insufficient safety and efficacy data, particularly regarding its chemical definition and potential for decomposition in water, this ingredient's suitability for precision skincare remains undetermined.
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References
Sources