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PEG-9 BUTYLOCTANOATE

72

Safety score · 0–100

Fine

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

About

A polyethylene glycol fatty acid ester that functions as an emollient and emulsifier, providing smooth, non-greasy skin feel in cosmetic formulations.

PEG-9 butyloctanoate is a PEG ether fatty acid ester (PEG-9 chain with a butyloctanoyl fatty acid moiety) functioning as an emollient and emulsifying agent in cosmetic formulations. PEG esters are generally regarded as safe for use in cosmetics, with the ethoxylation chain providing water solubility and the fatty acid portion providing skin nourishment. EU CosIng lists PEG esters without specific restrictions in Annex II or III. As with all PEG compounds, there is a theoretical concern for ethylene oxide contamination in poorly refined materials, and use on damaged skin may allow greater penetration. The score reflects a common cosmetic ingredient with minor concerns.

Skin benefits

  • Emollient providing smooth skin feel
  • Emulsifying agent for stable formulations

Known concerns

  • Theoretical concern for ethylene oxide contamination in low-purity grades
  • Greater penetration on compromised skin

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 — always read the physical product label and consult a healthcare professional for personal concerns.