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Surfactant

CAPRYLETH-9 CARBOXYLIC ACID

CAS 53563-70-5
76

Safety score · 0–100

Fine

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

A C8 caprylyl alcohol ether carboxylic acid with 9 EO. Mild surfactant for light cleansing systems; standard ethoxylate dioxane purity caveat applies.

Function

CLEANSINGSURFACTANT - EMULSIFYINGSURFACTANT - CLEANSING

Skin benefits

  • Mild C8-based ether carboxylate
  • Effective light cleansing
  • Good biodegradability vs branched analogs

Known concerns

  • Possible trace 1,4-dioxane from ethoxylation
  • Shorter alkyl chain — slightly less mild than C12+ analogs

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.