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Emulsifier

PEG-20 STEARATE

CAS 9004-99-3
65

Safety score · 0–100

Fine

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

A PEG-20 ester of stearic acid used as a workhorse non-ionic emulsifier. CIR-reviewed safe when 1,4-dioxane is properly stripped during manufacture.

Skin benefits

  • Versatile non-ionic emulsifier
  • Solubilizes oils and fragrances
  • Stabilizes lotions and creams

Known concerns

  • Ethoxylated; trace 1,4-dioxane risk if not purified
  • Mild eye irritant in concentrate

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.