Acrylates/Polytrimethylsiloxymethacrylate Copolymer
What is Acrylates/Polytrimethylsiloxymethacrylate Copolymer?
Acrylates/Polytrimethylsiloxymethacrylate Copolymer is a synthetic polymer formed from acrylic acid esters and polytrimethylsiloxymethacrylate, functioning primarily as a film-forming agent, adhesive, and viscosity controller in skincare and cosmetic formulations. It creates a flexible, water-resistant film on the skin that enhances product wear, provides a smooth texture, and helps bind pigments or other ingredients. Commonly used in foundations, mascaras, sunscreens, and long-wear makeup products for improved durability and aesthetic appeal.
Roles in Formulation
This ingredient serves the following purposes in cosmetic formulations:
Bulking Agent
Increases mass/volume to build structure and improve handling, commonly used to adjust feel, spread, and cost-in-use without acting as a primary active.
Suspending agent
Keeps insoluble particles (pigments, beads, actives) evenly dispersed by increasing viscosity or forming a network, preventing settling and separation.
Viscosity controlling agent
Adjusts thickness to the desired level for stability and usability, improving dispensing, suspension, and texture across many formulation types.
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.