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Surfactant

C30-50 ALKETH-3 (FORMERLY C30-50 PARETH-3)

CAS 246538-85-2 (generic)
78

Safety score · 0–100

Fine

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

A very long-chain (C30-50) alcohol with only 3 EO units — a strongly oil-loving emulsifier for rich, heavy formulations. Massive molecular size keeps skin penetration negligible.

Function

SURFACTANT - EMULSIFYING

Skin benefits

  • W/O emulsion stabilisation
  • Heavy-oil compatibility
  • Effective at low %
  • Negligible skin penetration

Known concerns

  • Lipophilic — slight irritation potential
  • 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

79
C30-50 ALKETH-3
Emulsifier

Check your shelf

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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.