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Fragrance ingredient

1-NONEN-3-OL

CAS 21964-44-3
60

Safety score · 0–100

Fine

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

An unsaturated nine-carbon alcohol used at trace levels as a fresh, mushroom-like fragrance note. Generally safe in finished perfumes when IFRA-compliant, but a possible irritant at higher use levels.

Skin benefits

  • Used as a fragrance and flavour ingredient at low levels
  • Adds fresh, mushroom or melon-like olfactory notes
  • Volatile and not expected to bioaccumulate on skin

Known concerns

  • Unsaturated alcohols can be mild skin irritants
  • Potential allergen at higher fragrance concentrations
  • Limited dedicated cosmetic safety review
  • Not recommended in leave-on products at high doses

References

EU

EU CosIng database

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

Related fragrance ingredients

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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.