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Fragrance / emollient ester

METHYL UNDECENOATE

CAS 111-81-9
68

Safety score · 0–100

Fine

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

Methyl undecenoate is a fragrance ester related to undecylenic acid, used for waxy and fruity notes. Generally well tolerated at low fragrance levels with standard sensitisation caveats.

Skin benefits

  • Methyl ester of undecylenic acid, used as a fragrance and emollient
  • Undecylenic acid has documented antifungal activity

Known concerns

  • Fragrance esters can cause irritation or sensitisation in susceptible users
  • Limited cosmetic-specific SCCS opinion on the methyl ester form
  • Possible photo-stability questions in leave-on products

References

EU

EU CosIng database

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

Related fragrance / emollient esters

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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.