Poly(Methoxy PEG-9 Methacrylate)

Poly(Methoxy PEG-9 Methacrylate) 1
Synthetic
Humectant
Occlusive
Skin Conditioner
Not Clean
Poly(Methoxy PEG-9 Methacrylate) is the polymer
Formula
C18H17N3O3
Mol. Weight
323.3
CAS #
96478-13-6
Form
Powder
Functions
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Humectant
A moisture magnet. Pulls water from the air and deeper skin layers up to the surface to keep skin plump and hydrated.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Locks In Moisture
Traditional Use
A synthetic polymer developed in recent decades as a film-former and texture enhancer in modern cosmetics. Created through controlled polymerization to improve product performance without any traditional or natural precursor.
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
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR