Methyl Methacrylate Crosspolymer

What is Methyl Methacrylate Crosspolymer?

Methyl Methacrylate Crosspolymer is a synthetic polymer created by cross-linking methyl methacrylate monomers, resulting in porous microspheres. Commonly found in makeup, sunscreens, and skincare formulations like foundations, primers, and creams. It works by depositing a thin, flexible film on the skin that boosts water resistance, transfer resistance, and overall product staying power. As a viscosity controller, it thickens formulas to prevent separation, ensure even distribution of actives, and deliver a smooth, non-greasy application. Its spherical particles also mattify and absorb excess oils, contributing to a velvety finish without clogging pores.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1 View on EWG →
PubChem View on PubChem →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Film former
Creates a continuous film on skin or hair to improve wear, water resistance, transfer resistance, shine, or hold in sunscreens, makeup, and styling products.
Viscosity controlling agent
Adjusts thickness to the desired level for stability and usability, improving dispensing, suspension, and texture across many formulation types.

Benefits

Enhances product adhesion and resistance to water or sweat for longer wear.

Improves texture by thickening formulas for better spreadability and stability.

Absorbs oils to provide a matte, smooth feel on skin.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
Individuals seeking long-lasting makeup or sunscreens.
Those with known allergies to acrylate or methacrylate compounds.
People with oily or combination skin preferring non-comedogenic options.
People experiencing irritation from polymer-based film formers.
Users wanting lightweight, stable formulations with silky application.
Individuals preferring entirely natural or polymer-free products.

Safety Notes

  • Rated low hazard by safety assessments with minimal skin or eye irritation potential.
  • Non-comedogenic, unlikely to clog pores based on formulation data.

Frequently Asked Questions about Methyl Methacrylate Crosspolymer

Is Methyl Methacrylate Crosspolymer safe for daily use?

Yes, it's considered low hazard with minimal irritation potential in cosmetics.

Does it clog pores?

No, it has a comedogenic rating of zero and absorbs oils instead.

What products contain it?

Found in foundations, sunscreens, primers, and creams for film-forming benefits.