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Thickener

PEG-45M

CAS 25322-68-3
65

Safety score · 0–100

Fine

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

A very-high-molecular-weight PEG (polyethylene glycol) used as a thickener and stabilizer. Inert and non-irritating; main caveat is trace dioxane in unpurified grades.

Function

HUMECTANT

Skin benefits

  • Thickens watery formulas
  • Stabilizes emulsions and suspensions
  • Adds slip and cushion

Known concerns

  • May carry trace 1,4-dioxane unless purified
  • High-MW PEG generally non-irritating but inert
  • Plastic-pollution concerns from rinse-off

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.