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LAURETH-1

CAS 4536-30-5
65

Safety score · 0–100

Fine

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

A short-chain ethoxylated lauryl alcohol (1 mole EO) used as a surfactant and emulsifier that may cause mild skin irritation at higher concentrations.

Laureth-1 (CAS 4536-30-5) is an ethoxylated lauryl alcohol with an average of 1 mole of ethylene oxide. Short-chain laureths (with very few EO units) are more lipophilic and can be more irritating than longer-chain ethoxylated versions. Laureth-1 is not listed in EU Annex II or III restrictions. The SCCS has reviewed ethoxylated alcohols and considers them safe at typical use concentrations in rinse-off products, though higher concentrations in leave-on products warrant evaluation.

Skin benefits

  • Surfactant and emulsifying function
  • Helps solubilise ingredients

Known concerns

  • Mild skin irritation potential at high concentrations
  • More lipophilic/irritating than higher ethoxylated laureths

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.