Snapshot
- Overview
- A polymer that helps color cosmetics resist smudging.
- Category
- Tone/Texture
- Type
- Film Former
Butylene/Ethylene/Styrene Copolymer
Butylene/Ethylene/Styrene Copolymer is a synthetic triblock polymer made of olefin and styrenic segments. It's used to form flexible films, adjust viscosity, and help suspend pigments in gels, mascaras, and long-wear color products.
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Our take
Is Butylene/Ethylene/Styrene Copolymer a Good Ingredient?
It forms flexible films that improve wear but provides minimal direct skin benefit and can be harder to remove, which is why it's rated Fair; the occlusive film or removal friction may trigger irritation or clogged pores for some users.
What it does
Skin Benefits
Helps color stay put with a flexible, comfortable film that resists smudging and transfer, contributing to a smoother, more uniform finish.
Where you'll find it
Uses in Skincare & Cosmetics
Often found in eyeliners, brow gels, and liquid lipsticks for hold and wear, and also used in styling gels and pomades to boost texture and staying power.
Before you use it
Safety
Generally considered inert with low irritation potential, but residue buildup or flaking near the eyes can bother sensitive users. Use an appropriate cleanser or oil-based remover to limit rubbing and reduce the chance of irritation.
Products with Butylene/Ethylene/Styrene Copolymer
