Sodium Acrylates Copolymer

AKA: Acrylates copolymer sodium salt, Sodium polyacrylate
Synthetic
Occlusive
Clean
Sodium Acrylates Copolymer is the sodium salt of a polymer consisting of acrylic acid, methacrylic acid or one of their simple esters
CAS #
-
Form
Liquid
State
Solid
Functions
Binding
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Opacifying
Viscosity Controlling
Anti-Inflammatory
Antimicrobial
Fights Acne
Traditional Use
Developed in the mid-20th century as a synthetic polymer specifically engineered for use as a thickening and film-forming agent in cosmetics and personal care products. This modern ingredient has no traditional predecessor.
EWG
2
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
ewg-2
medical-approval
pregnancy-nursing-safe
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Skin Types
all-skin-types, gentle
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing
🛡️Safety-assessed4 reviews
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: CosIng · EWG · CIR