Science
Mechanism of Action
This ingredient operates by forming a continuous, protective film across the skin's surface. As a humectant, it leverages the inherent properties of polyethylene glycols (PEGs) to establish hydrogen bonds with water molecules. This action facilitates a sustained release of water, promoting prolonged hydration and effectively reducing transepidermal water loss by reinforcing the skin's natural barrier.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
A 20% solution of Poly(Methoxy PEG-9 Methacrylate) presents as a clear, colorless to pale yellow liquid with an optimal pH range of 3.0 to 5.0. For maximal stability, storage should be maintained between 2-10 degrees C. Formulators should note that related methacrylate-PEG compounds may incorporate polymerization inhibitors such as 4-Methoxyphenol or MeHQ.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel concluded that Poly(Methoxy PEG-9 Methacrylate) is safe for use in cosmetics when formulated to be non-irritating. This determination is supported by the FDA's established safety profile for Polymethyl Methacrylate (PMMA) and other related polymers, which are utilized in various medical devices.
Your Skin
Skin Compatibility
Our Assessment
Verdict
POLY(METHOXY PEG-9 METHACRYLATE) is a valuable ingredient for formulations that aim to provide sustained hydration and enhance skin barrier function through its film-forming and humectant properties, deemed safe with appropriate formulation.
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