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Moumoujus

ISOPHORONE DIAMINE/ISOPHTHALIC ACID/TRIMETHYLOLPROPANE COPOLYMER.

Valuable / FILM FORMING

This copolymer serves as a multifunctional ingredient in cosmetic formulations, primarily enhancing product texture and stability. It functions as a binder, promoting cohesion in powdered products, and as a film-former, contributing to a silky, compact, and homogenous finish.

Summary

Binder Film Former

Science

Mechanism of Action

As a polyurethane polymer, this ingredient forms a cohesive film upon application, effectively binding particulate components within a formulation. This action ensures a uniform product texture and facilitates a smooth, durable surface finish, optimizing the overall sensory and functional performance of the cosmetic.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Unknown
Optimal pH N/A
0 7 14

Stability

Polyurethane polymers generally exhibit stability under typical environmental conditions, with related polyurethanes maintaining integrity at temperatures ranging from 5°C to 50°C for up to 3 years. The isophorone diamine monomer, however, is air-sensitive and requires storage under an inert gas.

Conflicts

  • High concentrations of sensitizers (e.g., methylisothiazolinone) if present in carrier solutions, necessitating careful formulation to avoid significant total concentrations.
  • Acids, which can react with the isophorone diamine monomer to form salts.
  • Isocyanates, halogenated organics, peroxides, acidic phenols, epoxides, anhydrides, and acid halides, with which the isophorone diamine monomer is incompatible.
  • Aluminum and steel, as the isophorone diamine monomer can induce corrosion in the presence of moisture and carbon dioxide.

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has evaluated polyurethanes, including this copolymer, concluding their safety in use and concentration when formulated to be non-sensitizing, provided there are no detectable residual isocyanates or other monomers. Formulators must consider potential sensitizers like methylisothiazolinone if supplied via carrier solutions, ensuring combined concentrations do not become significant. EWG Skin Deep rates this ingredient with low concern for cancer, allergies, immunotoxicity, and developmental or reproductive toxicity.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

This copolymer is a valuable formulation additive, contributing to product texture and stability as a binder and film-former with a favorable safety profile when appropriately formulated.

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