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Ingredient Facts
Poly (Methoxy PEG-9 Methacrylate)
Humectant · Humectant · EWG: 4
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
See origin →
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.