undefined 1
Butylene/Ethylene Copolymer
AKA “Plastic polymer, Film-forming polymer”
Ingredient
Make this about you

Tap what applies — every card instantly flags it for you. Stays on your device, syncs if you're signed in.

Ingredient Facts
Butylene/ethylene copolymer
AKA: Plastic polymer, Film-forming polymer
Ingredient · Viscosity Controlling · EWG: 4
Synthetic
Not Clean
Butene, polymer with ethene
CAS #
9019-29-8
Form
Liquid
State
Solid
See origin →
Functions
Viscosity Controlling
Controls Viscosity
Traditional Use
Developed in the mid-20th century as a synthetic polymer. Used in cosmetics to improve texture, provide film-forming properties, and enhance product spreadability.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR