Ethylene/Sodium Acrylate Copolymer

Synthetic
Occlusive
Emulsifier
Not Clean
2-Propenoic acid, polymer with ethene, sodium salt;2-Propenoic acid, sodium salt, polymer with ethene
CAS #
25750-82-7, 25749-98-8
State
Solid
Functions
Binding
Emulsion Stabilising
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Opacifying
Holds Formula Together
Stabilizes Emulsion
Creates Protective Barrier
Adds Opacity
Creates protective layer
Holds ingredients together
Keeps product blended
Creates creamy opacity
Traditional Use
A modern synthetic polymer developed for cosmetic applications. Functions as a thickening agent and suspending agent in aqueous cosmetic formulations.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing
🛡️Safety-assessed2 reviews
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: CosIng · EWG · CIR