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Butylene/Ethylene/Styrene Copolymer

What Butylene/Ethylene/Styrene Copolymer is & what it does

Ethylene/Propylene/Styrene Copolymer is a synthetic polymer built from ethylene, propylene, and styrene monomers. In cosmetics, including some sunscreens, it is used as a viscosity controlling and texturizing agent that helps thicken and stabilize the formula. A notable property is its oil-compatible nature, which makes it useful for structuring anhydrous or oil-rich bases.

What does Butylene/Ethylene/Styrene Copolymer do in skincare?

Butylene/Ethylene/Styrene Copolymer is a synthetic polymer used in cosmetics mainly as a thickener and texture or film-forming agent. It helps control the consistency and feel of a product and can support an even, durable layer on the skin. It is a structural ingredient rather than an active.

Is Butylene/Ethylene/Styrene Copolymer natural or synthetic?

Butylene/Ethylene/Styrene Copolymer is a synthetic ingredient, made by combining butylene, ethylene, and styrene units into a copolymer. It is not plant or animal derived. Synthetic polymers like this are commonly used to give products their desired texture and stability.

Is Butylene/Ethylene/Styrene Copolymer safe?

Butylene/Ethylene/Styrene Copolymer is a large polymer used as a texture and film-forming agent, and such polymers are generally considered to sit on the surface of the skin rather than being absorbed. It is used in a range of cosmetic products. As always, follow the product's directions and discontinue use if irritation occurs.

Sunscreens with Butylene/Ethylene/Styrene Copolymer

We rate 11 sunscreens that contain it, showing the top 10 by overall score:

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