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UNDECYL ALCOHOL

CAS 112-42-5
78

Safety score · 0–100

Fine

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

About

A fatty alcohol emollient with good skin compatibility and no significant regulatory restrictions in cosmetics.

Undecyl alcohol (C11H23OH) is a fatty alcohol that functions as an emollient, viscosity controller, and fragrance ingredient in cosmetic formulations. Like other fatty alcohols, it is considered inert and non-irritating at typical cosmetic concentrations. It is not restricted under EU cosmetics regulation and has been evaluated as safe for use in both leave-on and rinse-off products. The C11 chain length provides balanced emolliency without excessive greasiness.

Skin benefits

  • Skin conditioning emollient
  • Texture and viscosity control
  • Fragrance component

Known concerns

  • Very low concern ingredient
  • General fatty alcohol safety profile applies

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 — always read the physical product label and consult a healthcare professional for personal concerns.