Methoxy PEG refers to a group of polyethylene glycol (PEG) derivatives where one end of the polymer chain is capped with a methoxy group. These ingredients are versatile and function as solvents, humectants (attracting and retaining moisture), and emulsifiers in cosmetic formulations. They help to dissolve other ingredients, keep products stable, and contribute to a smooth texture.
NoneSolvent, humectant, emulsifierVeganEvidence: Medium
BenefitMinimal 0.5 / 4
Hydration
RiskLow 0.8 / 4
Irritation
Rated by SpottyLabs' ingredient methodology, independent of brands.
Things to watch
Potential for mild irritation in very high concentrations or on compromised skin
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Methoxy PEG primarily acts as a solvent to dissolve other ingredients, a humectant to help skin retain moisture, and an emulsifier to blend oil and water components in a product. It contributes to product stability and texture.
Is Methoxy PEG considered safe for sensitive skin?
While generally considered safe, some individuals with very sensitive or compromised skin might experience mild irritation from Methoxy PEG, especially at higher concentrations. Patch testing is advisable if you have known sensitivities.
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