murphyPolyacrylate-13
molecular structure · PubChem
AKA: PAA-13
Synthetic
Occlusive
Not Clean
OriginDerived from acrylic acid and acrylamide monomers, members of the acrylic polymer chemical family. Synthesized through free-radical polymerization of multiple acrylic monomers to form a crosslinked copolymer.
Copolymer of acrylic acid, acrylamide, sodium acrylate, sodium acryloyldimethyltaurate monomers
CAS #
-
Form
Powder
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Creates Protective Barrier
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.
EWG
3
CIR
CIR tentative re-review report (2026)
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
1 study / 1 not sensitizing (CIR 936)
Not an Eye Irritant
2 studies / 2 not irritating (CIR 936)
Mixed Skin Irritation Results
2 studies / 1 irritating / 1 not irritating / reactions slight (CIR 936)
Concentration Guide
Leave-on0.1–3%
Rinse-off0.1–0.6%
0%50%100%
CIR reported use · 2023 survey
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR