PEG polymer
METHOXY PEG-40
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
Methyl-capped polyethylene glycol used as a humectant, solvent and carrier in cosmetics. Considered low-toxicity but shares the impurity concerns common to ethoxylated PEGs.
Skin benefits
- Humectant and solubiliser
- Improves spreadability
- Low irritation potential
Known concerns
- Ethoxylated polymer with possible 1,4-dioxane and ethylene oxide residues
- Boosts penetration of other ingredients
- Avoid on broken skin
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
Related peg polymers
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve, so always read the physical product label and consult a healthcare professional for personal concerns.