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Moumoujus

TRIMETHYLPENTANEDIOL/ISOPHTHALIC ACID/TRIMELLITIC ANHYDRIDE COPOLYMER.

Insufficient Data / FILM FORMING, VISCOSITY CONTROLLING

This copolymer functions as both a film-forming agent and a non-aqueous viscosity enhancer in cosmetic formulations. It creates an ultra-thin, continuous film on the skin or hair, offering a barrier against environmental stressors, while also improving product stability and texture by increasing viscosity.

Summary

Film-forming Viscosity Controlling

Science

Mechanism of Action

By depositing an invisible, coherent film on the skin's surface, this ingredient provides a protective layer designed to resist damage from external factors such as pollutants and UV exposure. Concurrently, in non-aqueous systems, it effectively increases a product's viscosity, leading to enhanced physical stability, reduced sedimentation, and a more uniform, thickened consistency.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Derived from trimellitic anhydride, a hygroscopic compound that decomposes into a strongly acidic solution in the presence of water, this copolymer is optimally suited for anhydrous formulations. While it exhibits solubility in common organic solvents, its dissolution in cold water is poor. A significant formulation concern is the potential for residual trimellitic anhydride monomer, which is known to be a respiratory irritant.

Conflicts

  • Water

Safety

Safety Profile

CIR Status
Insufficient data
Sensitization risk Unknown

The Cosmetic Ingredient Review (CIR) Expert Panel has found insufficient data to confirm the safety of this copolymer for use in any cosmetic application, including nail products. A critical issue highlighted is the lack of fundamental chemical characterization, deeming the ingredient 'essentially chemically undefined.' The CIR Panel has specifically requested data on molecular weight, manufacturing process, impurity levels (particularly residual trimellitic anhydride monomer), dermal absorption and metabolism, genotoxicity, reproductive toxicity, and irritation/sensitization at various concentrations. The precursor monomer, trimellitic anhydride, is a documented respiratory irritant associated with occupational asthma and allergic rhinitis, which raises considerable concern about potential residual monomer content within the copolymer.

Your Skin

Skin Compatibility

No Normal
No Dry
No Oily
No Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Verdict

Insufficient Data

Given the CIR Panel's conclusion of insufficient safety data, the lack of defined chemistry, and concerns regarding potential residual irritant monomers, the use of this ingredient in cosmetic formulations is not currently supported.

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