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PEG thickener

PEG-25M

CAS 25322-68-3
72

Safety score · 0–100

Fine

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

A high molecular weight polyethylene glycol used as a thickening and emulsion-stabilizing polymer. Well tolerated on intact skin, with standard PEG-class purification considerations.

Skin benefits

  • High molecular weight PEG used as a thickener and emulsion stabilizer
  • Provides viscosity to aqueous formulations
  • Improves slip and spreadability of finished products
  • Generally low irritation profile at use levels

Known concerns

  • PEG class carries trace 1,4-dioxane and ethylene oxide impurity risk
  • Should not be used on broken or compromised skin per CIR guidance
  • Limited substantivity may require co-thickeners

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, so always read the physical product label and consult a healthcare professional for personal concerns.