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Humectant

METHOXY PEG-100

CAS 9004-74-4 Updated
65

Safety score · 0–100

Fine

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

About

A methyl-ether-capped polyethylene glycol used as a humectant or formulation aid. Generally low-irritation, but PEG materials depend on dioxane purification.

Function

HUMECTANTSOLVENT

Skin benefits

  • Water-soluble PEG humectant/solubilizer
  • Non-ionic and generally low-irritation
  • Used as a formulation aid

Known concerns

  • PEG ingredient — relies on supplier control of 1,4-dioxane/ethylene oxide residues
  • Some PubChem entries flag inhalation hazards for raw EO-derived PEGs
  • Best in formulations with verified low-residue grade

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.