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PPG-3-ISOSTEARETH-9

CAS -
60

Safety score · 0–100

Fine

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

A propoxylated and ethoxylated alcohol — functions as a surfactant and emulsifier in cosmetic formulations. The mixed EO/PO chain gives it both water- and oil-binding properties.

PPG-3-Isosteareth-9 is a mixed ethoxylated-propoxylated isostearyl alcohol with approximately 9 moles EO and 3 moles PO per mole of isostearyl alcohol. It functions as a nonionic surfactant and emulsifier. Isostearyl alcohol is a branched C18 alcohol known for its excellent skin compatibility and low irritation potential. However, combined ethoxylation/propoxylation introduces standard concerns for residual monomers and processing impurities. The ingredient is listed in CosIng but not restricted in EU Annexes.

Skin benefits

  • Branched alcohol base (isostearyl) is known for excellent skin tolerance
  • Emulsifying — helps blend water and oil phases

Known concerns

  • Ethylene oxide and propylene oxide trace contamination concerns
  • Possible sensitization at high concentrations

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.