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Ingredient · INCI reference

Acrylates/Polytrimethylsiloxymethacrylate Copolymer

Acrylates/Polytrimethylsiloxymethacrylate Copolymer is a synthetic silicone-acrylate copolymer used in cosmetics as a film former that improves the wear and even spread of the product.

What it is

This is a copolymer combining acrylate units with silicone-bearing methacrylate units, designed to form a flexible film on the skin. The silicone portion lends a smooth, low-tack feel while the acrylate backbone provides durable film strength. In sunscreens and makeup it helps the product layer evenly and resist transfer, supporting consistent coverage through the day.

Safety & warnings

This copolymer is generally well tolerated and functions as an inert film former that remains on the skin surface. It is not a recognized fragrance allergen and is not typically associated with comedogenicity.

Origin & sourcing

Synthetic; a copolymer manufactured by polymerizing acrylate monomers together with a trimethylsiloxy-functional methacrylate monomer.

Questions everyone asks

What is this silicone-acrylate copolymer for?

It forms a flexible film on the skin that helps the sunscreen spread evenly and resist transfer, supporting more consistent coverage.

Is it a silicone?

It is a hybrid copolymer that includes silicone groups along an acrylate backbone, combining a smooth silicone feel with durable film strength.

Sources & references

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