Butylene/Ethylene/Styrene Copolymer

AKA “Butylene Ethylene Styrene Copolymer, B/E/S Copolymer”

Synthetic

Ingredient Facts

Butylene/ethylene/styrene copolymer

AKA: Butylene Ethylene Styrene Copolymer, B/E/S Copolymer

Synthetic · Emollient · EWG: 2

Synthetic

Emollient

Occlusive

Skin Conditioner

Synthetic

Clean

Butylene/Ethylene/Styrene Copolymer is a polymer of butylene and ethylene and styrene monomers terminated by hydrogenation Science: Functions: Viscosity Controlling Safety Ratings: CIR: Safe as used

CAS #

68648-89-5

Form

Liquid

State

Solid

See origin →

Functions

Viscosity Controlling

Film Forming

Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.

Emollient

Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.

Smoothing

Controls Viscosity

Traditional Use

A synthetic polymer developed in the mid-20th century for use in cosmetics as a film-former and texture enhancer. Created to provide water resistance and long-lasting wear in makeup products.