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PEG-based emulsifier

PEG-20 ISOSTEARATE

CAS 56002-14-3
72

Safety score · 0–100

Fine

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

A polyethylene-glycol ester of isostearic acid used as a mild emulsifier and solubilizer. Effective and well tolerated at typical levels, with the standard PEG caveat about 1,4-dioxane purification controls.

Skin benefits

  • Nonionic emulsifier and solubilizer for oil-in-water systems
  • Helps disperse oils, fragrances, and actives into water phases
  • Generally non-irritating at typical concentrations
  • Improves spreadability and product feel

Known concerns

  • PEG ingredients can carry trace 1,4-dioxane and ethylene oxide if poorly purified
  • Not suitable for products marketed as PEG-free or natural
  • Quality varies significantly by supplier purification standards
  • Cosmetic-grade purity must be confirmed by COA

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.