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PEG-9 STEARATE

CAS 9004-99-3
79

Safety score · 0–100

Fine

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

A medium-chain polyethylene glycol stearate ester used as an emulsifier and skin conditioning agent in a variety of cosmetic products including facial moisturizers and body lotions.

PEG-9 STEARATE is the esterification product of polyethylene glycol (9 EO units) with stearic acid, providing balanced emulsification properties suitable for oil-in-water formulations. The 9-unit EO chain offers moderate skin penetration potential while maintaining a favorable safety profile consistent with CIR assessments of PEG stearates. Not restricted in EU Annexes II or III under Regulation (EC) No 1223/2009. The medium EO chain provides good water solubility for aqueous cosmetic formulations.

Skin benefits

  • emulsifying
  • skin conditioning
  • emollient

Known concerns

  • ethylene oxide contamination (potential)
  • 1,4-dioxane contamination (potential)

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.