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Humectant / solvent (PEG)

METHOXY PEG-10

CAS 9004-74-4
72

Safety score · 0–100

Fine

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

A polyethylene glycol used as a humectant and solubilizer in cosmetics. Generally safe on intact skin, though PEGs require purification to limit trace 1,4-dioxane and are not recommended on broken skin.

Skin benefits

  • Water-soluble PEG humectant and solvent
  • Helps solubilize fragrances and active ingredients
  • Low irritation potential on intact skin
  • Widely used in rinse-off and leave-on cosmetics

Known concerns

  • PEGs may contain trace 1,4-dioxane impurity if not purified
  • Should not be applied to damaged or broken skin
  • Petrochemical-derived (concern for naturals-focused consumers)

References

EU

EU CosIng database

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

Same plant / compound family

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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.