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Surfactant

UNDECETH-5 CARBOXYLIC ACID

CAS 173536-74-8
75

Safety score · 0–100

Fine

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

An ethoxylated C11 alkyl ether carboxylic acid used as a mild anionic surfactant. Class is well-tolerated; main concern is generic 1,4-dioxane purity control common to all ethoxylated cleansers.

Function

CLEANSINGSURFACTANT - CLEANSING

Skin benefits

  • Mild ether carboxylate surfactant
  • Better skin compatibility than sulfate surfactants
  • Effective at low concentrations

Known concerns

  • Possible trace 1,4-dioxane from ethoxylation
  • Limited individual cosmetic safety data

References

EU

EU CosIng database

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

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Surfactant

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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.