What concentration of Butylene/Ethylene/Styrene Copolymer is effective?

Typical effective concentrations of Butylene/Ethylene/Styrene Copolymer are Typically 1–10% in cosmetic formulations depending on desired viscosity and gel properties.

What skin types is Butylene/Ethylene/Styrene Copolymer suitable for?

Butylene/Ethylene/Styrene Copolymer is suitable for all skin types.

The Skin Formulary

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Researched by Helena DeMaria-Williams

Formula IngredientViscosity Controller

Butylene/Ethylene/Styrene Copolymer

Q: Can Butylene/Ethylene/Styrene Copolymer cause skin irritation?

Butylene/Ethylene/Styrene Copolymer has a low irritation risk. EWG rates this ingredient at 1 (lowest hazard). CIR (Cosmetic Ingredient Review) gives it an A rating (highest safety). No EU CosIng Annex II or III restrictions apply. As an inert polymer, it has minimal direct skin interaction.

Q: Is Butylene/Ethylene/Styrene Copolymer safe to use during pregnancy?

Butylene/Ethylene/Styrene Copolymer is rated "safe" for pregnancy use. No specific pregnancy concerns noted in available safety databases. As an inert synthetic polymer with no known systemic absorption, it is generally considered safe during pregnancy.

Q: Does Butylene/Ethylene/Styrene Copolymer increase sun sensitivity?

Butylene/Ethylene/Styrene Copolymer has a no sun sensitivity risk. Does not increase photosensitivity. No special sun protection measures are required.

INCI: Butylene/Ethylene/Styrene Copolymer

Butylene/ethylene/styrene copolymer is a hydrogenated synthetic polymer of butylene, ethylene, and styrene monomers. It functions as a viscosity controller and oil gelling agent, commonly used alongside ethylene/propylene/styrene copolymer to create gel-like textures when combined with hydrocarbons such as mineral oil or emollient esters. Widely used in lip care and colour cosmetics.

What does this do in a formula?

viscosity control, oil gelling, texture enhancement, formulation stability, film forming

Is Butylene/Ethylene/Styrene Copolymer safe? Key considerations

Can Butylene/Ethylene/Styrene Copolymer cause irritation?

Low Risk

EWG rates this ingredient at 1 (lowest hazard). CIR (Cosmetic Ingredient Review) gives it an A rating (highest safety). No EU CosIng Annex II or III restrictions apply. As an inert polymer, it has minimal direct skin interaction.

Does Butylene/Ethylene/Styrene Copolymer increase sun sensitivity?

No Risk

Does not increase photosensitivity. No special sun protection measures are required.

Is Butylene/Ethylene/Styrene Copolymer safe during pregnancy?

Safe

No specific pregnancy concerns noted in available safety databases. As an inert synthetic polymer with no known systemic absorption, it is generally considered safe during pregnancy.

How does Butylene/Ethylene/Styrene Copolymer work?

Which products contain Butylene/Ethylene/Styrene Copolymer?

Shop products that contain Butylene/Ethylene/Styrene Copolymer

Vitamin C Suspension 23% + HA Spheres 2%

Ascorbic acidSodium hyaluronate

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