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Emulsifier

PEG-55 STEARATE

CAS 9004-99-3 Updated
68

Safety score · 0–100

Fine

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

About

A polyethylene-glycol stearate emulsifier — it helps oil and water mix in creams. Generally well tolerated, though purified grades matter to keep 1,4-dioxane impurities low.

Skin benefits

  • Effective nonionic emulsifier
  • Stabilizes oil-in-water emulsions
  • Mild surfactant tolerated on skin
  • Wide cosmetic use history

Known concerns

  • PEG manufacturing can leave 1,4-dioxane traces if not purified
  • Slight risk on broken skin
  • Not biodegradable in the strict sense

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

Related emulsifiers

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.