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Surfactant

UNDECETH-5

CAS 34398-01-1
75

Safety score · 0–100

Fine

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

An ethoxylated fatty alcohol surfactant (5 PEG units) — helps blend oily ingredients into water. Mild at cosmetic levels; like all ethoxylates needs purification to limit 1,4-dioxane traces.

Skin benefits

  • Effective non-ionic surfactant
  • Solubilizes fragrance and oils
  • Mild on skin at cosmetic dilutions

Known concerns

  • Ethoxylated — possible 1,4-dioxane trace contamination
  • Use purified cosmetic grade only
  • Mild eye irritation potential

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.