Polyethylene Glycol
PEGMacrogolPolyoxyethylene Glycol
Emulsifier
Polyethylene glycol is a type of plastic that can be used in many products, like cosmetics, medicines, and food. It helps mix things together that wouldn't normally mix, like oil and water.
Moderate Concern
Source: FDA GRAS list
The concern with polyethylene glycol is that it can be contaminated with ethylene oxide, a known carcinogen, but the FDA has set limits on how much can be present.
How Polyethylene Glycol Works in Formulation Science | PEG Explained for Researchers - BOC Sciences
BOC Sciences
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Last updated: May 16, 2026