Skip to content

Humectant / Solvent

METHOXY PEG-25

CAS 9004-74-4
62

Safety score · 0–100

Fine

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

Methoxy PEG-25 is a polyethylene glycol derivative used as a humectant and solvent in skincare. It is broadly tolerated but, like all PEGs, depends on manufacturing purity to limit dioxane traces.

Skin benefits

  • Functions as a humectant and solvent in cosmetic formulations
  • Helps stabilize emulsions and improve product texture
  • Generally considered safe for use in rinse-off and leave-on products

Known concerns

  • PEG compounds may carry trace 1,4-dioxane and ethylene oxide impurities from manufacturing
  • Potential enhanced skin penetration of other ingredients on damaged skin
  • Environmental persistence is a moderate concern for some PEG derivatives

References

EU

EU CosIng database

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

Check your shelf

Find METHOXY PEG-25 in your products.

Scan any cosmetic product with LuxSense to see if it contains METHOXY PEG-25 and get a full ingredient breakdown with safety scores.

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.