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Fragrance

IONONE

CAS 8013-90-9 / 79-77-6
55

Safety score · 0–100

Moderate

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

Ionone — a violet-floral fragrance molecule from the ionone family. Effective at trace levels but an IFRA-restricted sensitizer, so fragrance-allergic users should be cautious, especially in leave-on products.

Skin benefits

  • Distinctive violet/floral fragrance note
  • Used in trace concentrations as a perfumery building block
  • Naturally occurring in many flowers and fruits

Known concerns

  • IFRA category-restricted fragrance allergen
  • Documented sensitizer in patch-test panels
  • Oxidation can amplify allergenic potential
  • Of higher concern in leave-on products near eye area

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.