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Surfactant

SODIUM NONOXYNOL-4 SULFATE

CAS 9014-90-8 (generic)
45

Safety score · 0–100

Moderate

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

A short-chain (4 EO) sulfated nonylphenol surfactant. Effective cleanser but more irritating than longer-EO homologs, and the nonylphenol backbone is REACH-restricted as an aquatic endocrine disruptor on degradation.

Function

SURFACTANT - CLEANSING

Skin benefits

  • Strong foaming
  • Effective rinse-off cleansing

Known concerns

  • Higher skin/eye irritation at low EO
  • REACH Annex XVII restrictions
  • Aquatic endocrine disruption
  • Possible 1,4-dioxane traces

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.