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ETHYLENE/METHACRYLATE COPOLYMER.

Valuable / FILM FORMING

Ethylene/Methacrylate Copolymer is a versatile synthetic polymer designed to create a uniform, continuous film on the skin, hair, or nails. It functions to enhance product longevity, provide a smoother texture, and improve the overall adhesion of cosmetic formulations.

Summary

Film-forming Viscosity Controlling Binder Emulsion Stabilizer

Science

Mechanism of Action

This ingredient forms a resilient polymeric film upon application, which acts as a physical barrier to lock in other ingredients, provide a comfortable skin feel, and impart a protective layer. Beyond film-forming, it also serves as an effective binder, aiding in the structural integrity of solid products, and as an emulsion stabilizer to maintain consistent product texture.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

As a film-forming agent and binder, Ethylene/Methacrylate Copolymer is incorporated into formulations to create a cohesive structure and enhance adherence, rather than acting as a loose particulate prone to dusting. Its function is to improve product integration and minimize powder dispersion.

The Formula

Formulation

Solubility
Both
Optimal pH N/A
0 7 14

Stability

Ethylene methyl acrylate copolymers exhibit excellent thermal stability, ensuring product integrity across various temperature conditions. They are broadly compatible with diverse polymer systems, including polyolefin resins, and can accommodate a high percentage of fillers without compromising stability. Formulations should be optimized to be non-irritating, with stringent control over residual monomer levels.

Synergies

  • Polyolefin resins
  • High percentage of fillers

Conflicts

  • Strong organic solvents (for continuous immersion)
  • Nitric Acid (for continuous immersion)

Safety

Safety Profile

CIR Status
Safe with restrictions
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel concluded that Ethylene/Methacrylate Copolymer is safe for use in cosmetics when formulated to be non-irritating, emphasizing the importance of keeping residual monomer levels as low as possible. The FDA permits its use as an indirect food additive in certain food packaging coatings, provided the copolymer contains no more than 25 weight percent of polymer units derived from methyl acrylate.

Your Skin

Skin Compatibility

No Normal
No Dry
No Oily
No Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Verdict

Valuable

Ethylene/Methacrylate Copolymer is a valuable ingredient for its robust film-forming, binding, and stabilizing properties, demonstrating high formulation compatibility and a low risk of irritation or comedogenicity, making it suitable for a wide array of cosmetic applications.

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