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Surfactant

C9-11 ALKETH-8 CARBOXYLIC ACID (FORMERLY C9-11 PARETH-8 CARBOXYLIC ACID)

78

Safety score · 0–100

Fine

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

A short-chain ethoxy-carboxylate surfactant — gentle on skin and common in sulfate-free face washes. Class-typical safety profile; standard purification controls keep 1,4-dioxane low.

Function

SURFACTANT - CLEANSING

Skin benefits

  • Mild gentle-cleansing surfactant
  • Suitable for sulfate-free positioning
  • Good wettability and foam structure
  • Helps disperse oils

Known concerns

  • Ethoxylated chemistry — 1,4-dioxane purity matters
  • Can mildly dry skin at higher %
  • Trace ethylene oxide reactivity in manufacture

References

EU

EU CosIng database

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

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Same plant / compound family

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C9-11 ALKETH-8 CARBOXYLIC ACID
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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.