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Fatty alcohol / emollient

UNDECYL ALCOHOL

CAS 112-42-5
68

Safety score · 0–100

Fine

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

Undecyl alcohol is an eleven-carbon fatty alcohol used as an emollient, viscosity modifier, and fragrance fixative. It has a soft waxy texture and is generally well tolerated at the low levels used in skincare.

Skin benefits

  • Functions as a fatty alcohol emollient
  • Contributes to texture and viscosity in formulations
  • Used as a fragrance fixative

Known concerns

  • Can cause skin and eye irritation in concentrated form
  • Some studies note mild aquatic toxicity
  • May be sensitising for a minority of users

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.