Film-Forming Agent

Methyl Methacrylate Crosspolymer

INCI: METHYL METHACRYLATE CROSSPOLYMER

Reviewed by Rosie · Last updated 14 Aug 2026

A synthetic polymer that forms a protective film on the skin surface

Best For Skin Types

All

Addresses

Texture, Surface irregularities

Usage Frequency

Daily

What Is Methyl Methacrylate Crosspolymer?

Methyl methacrylate crosspolymer is a synthetic polymer derived from acrylic chemistry. It is created through the crosslinking of methyl methacrylate monomers, resulting in a film-forming ingredient commonly used in skincare and cosmetic formulations.

In skincare products, this ingredient primarily functions to create a thin, flexible film across the skin. This film can help to temporarily smooth the appearance of the skin surface and may provide a light protective layer.

How It Works

Methyl methacrylate crosspolymer works by depositing a thin, adherent film on the skin. This occurs through the natural evaporation of the formulation's liquid components, leaving the polymer particles bonded to the skin surface and to each other.

The resulting film is flexible and breathable, designed to conform to the skin without feeling heavy or occlusive. The crosslinked structure gives the polymer stability whilst allowing some skin movement and natural perspiration.

Clinical Evidence & References

Published clinical research specifically examining methyl methacrylate crosspolymer in skincare products is limited. The ingredient has a long history of use in cosmetics and is generally recognised as safe by regulatory bodies, but independent efficacy studies are not readily available in the scientific literature.

Most claims regarding this ingredient are based on its known film-forming properties rather than robust clinical trials. If you are considering a product containing this ingredient, the overall formulation and its other active components will likely contribute more significantly to any skincare benefit.

How to Use

This ingredient is typically incorporated into finished formulations by manufacturers rather than used as a standalone treatment. If using a product containing methyl methacrylate crosspolymer, follow the product instructions. Allow the formulation to dry fully on the skin for the film to form properly, and use as part of your regular skincare routine without additional special handling.

Safety & Precautions

Methyl methacrylate crosspolymer is generally well-tolerated and is approved for use in cosmetics in major regulatory regions. It is not typically a sensitising agent, though individual sensitivity is always possible.

Frequently Asked Questions

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