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Thickener

PEG-90

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 large polyethylene glycol polymer used to thicken and stabilize formulations. Inert and safe at use levels per CIR, with the perennial PEG caveat of trace 1,4-dioxane unless suppliers strip it.

Skin benefits

  • Effective thickener and viscosity builder
  • Non-irritating polymer at typical levels
  • Widely used in surfactant systems
  • Cost-effective formulation aid

Known concerns

  • PEG manufacturing leaves trace 1,4-dioxane (suspected carcinogen) unless purified
  • Possible ethylene oxide residues
  • Quality depends on purification

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.