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Surfactant

UNDECETH-9

Updated
58

Safety score · 0–100

Moderate

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

About

An ethoxylated 11-carbon alcohol used as a nonionic surfactant. Functional but PEG-class trace 1,4-dioxane is a real concern unless suppliers purify well.

Function

SKIN CONDITIONING - EMOLLIENTSURFACTANT - EMULSIFYINGSKIN CONDITIONINGSURFACTANT - CLEANSING

Skin benefits

  • Surfactant
  • Solubilizer
  • Wetting agent

Known concerns

  • Trace 1,4-dioxane
  • Trace ethylene oxide
  • Skin/eye irritation in concentrate
  • Sparse cosmetic toxicology

References

EU

EU CosIng database

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

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Check your shelf

Find UNDECETH-9 in your products.

Scan any cosmetic product with LuxSense to see if it contains UNDECETH-9 and get a full ingredient breakdown with safety scores.

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.