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Surfactant

C20-40 ALKETH-3 (FORMERLY C20-40 PARETH-3)

CAS 246538-83-0 (generic)/ 251553-55-6 (generic)/ 97953-22-5 (generic)
78

Safety score · 0–100

Fine

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

A long-chain (C20-40) alcohol with just 3 EO units — a low-HLB emulsifier ideal for stabilising rich, oily formulations. Large molecular size limits skin penetration.

Function

SURFACTANT - EMULSIFYING

Skin benefits

  • W/O emulsion stabilisation
  • Rich emollient sensorial
  • Spreadability
  • Heavy-oil compatibility

Known concerns

  • Lipophilic — minor irritation potential at high %
  • Trace dioxane caveat
  • Modest use levels recommended

References

EU

EU CosIng database

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

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Same plant / compound family

65
C20-40 ALKETH-3
Emulsifier

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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.