Styrene/Acrylates Copolymer
Styrene/Acrylates Copolymer is a synthetic film-forming ingredient commonly used in UK beauty products such as mascaras, eyeliners, foundations and nail polishes. It helps create a flexible, water-resistant layer on skin or lashes that improves wear time and prevents smudging. Shoppers will often find it listed in long-wear or waterproof formulas.
How it works in skincare
In cosmetics and skincare, Styrene/Acrylates Copolymer works as a film former and texture enhancer. Once applied, it dries to create a lightweight, breathable film that helps pigments and active ingredients adhere to the skin or hair shaft, boosting longevity and resistance to water, sweat and oils. It also stabilises emulsions and improves the spreadability of liquid formulations, giving a smooth, even finish without heaviness.
Key benefits
- Creates a flexible film that improves product longevity
- Enhances water and smudge resistance in makeup
- Helps pigments adhere evenly to skin and lashes
- Improves texture and spreadability of formulas
- Stabilises emulsions in creams and lotions
- Gives a smooth, non-tacky finish
Best for
all skin types, oily skin, combination skin
Where it comes from
Styrene/Acrylates Copolymer is a fully synthetic polymer produced from petroleum-derived styrene and acrylic acid monomers. It does not come from any plant, mineral or natural source.