Acrylates/Polytrimethyl Siloxymethacrylate Copolymer

What is Acrylates/Polytrimethyl Siloxymethacrylate Copolymer?

Acrylates/Polytrimethylsiloxymethacrylate Copolymer is a synthetic polymer combining acrylic esters with silicone-modified methacrylate units, creating a hybrid material that merges the adhesion of acrylates with the smoothness of silicones. Primarily used in hair styling sprays, gels, mascaras, foundations, and sunscreens, it functions by depositing a thin, elastic film on surfaces. This film adheres well, resists moisture and rubbing, and allows flexibility without cracking, improving product performance. In formulations, it enhances durability while maintaining a non-tacky feel, often solubilized in solvents for even application. Derived through polymerization processes, it appears as a clear viscous liquid, compatible with various cosmetic bases for long-wear effects.

Comedogenic Rating 0/5 Low risk of clogging pores

EWG Safety Rating 1 View on EWG →

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.

Hair fixing

Improves style retention by depositing film-forming polymers that hold hair in place while balancing stiffness, flexibility, and humidity resistance.

Skin conditioning agent

Maintains skin softness, smoothness, and flexibility.

Hair fixative

Provides style hold by forming a film on hair, helping maintain shape, reduce frizz, and improve durability in sprays, gels, and mousses.

Benefits

Forms durable films that boost makeup and sunscreen longevity on skin.

Delivers flexible hold in hair products, resisting humidity and movement.

Conditions skin and hair for a smoother, softer texture.

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 sunscreen application.	Those with known sensitivity to acrylate polymers.
People styling hair for all-day shape retention.	Individuals experiencing irritation from silicone hybrids.
Users wanting added smoothness in daily skincare routines.	People preferring silicone-free formulations.

Safety Notes

Considered low hazard with minimal irritation potential in cosmetic use.
Non-comedogenic, unlikely to clog pores.

Frequently Asked Questions about Acrylates/Polytrimethyl Siloxymethacrylate Copolymer

What does this ingredient do in cosmetics?

It creates flexible films for better product adhesion, water resistance, and style hold on hair or skin.

Is it safe for daily use?

Rated low hazard, suitable for most with no significant concerns from authoritative reviews.

Does it benefit acne-prone skin?

Non-comedogenic rating makes it unlikely to contribute to pore clogging.