Polyethylene Glycol (PEG) Castor Oil
PEG-40 Castor OilPEG-40 Hydrogenated Castor Oil
Emulsifier
PEG castor oil is a type of oil that helps mix and blend different liquids together. It's often used in cosmetics and personal care products to make them feel smooth and creamy.
Moderate Concern
Source: EWG Skin Deep
The concern with PEG castor oil is that it may be contaminated with ethylene oxide, a known carcinogen, during the manufacturing process.
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Last updated: May 16, 2026