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Fragrance

ALPHA-METHYL-ALPHA-IONONE

CAS 127-42-4
64

Safety score · 0–100

Fine

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

An ionone-family ingredient (related to alpha-isomethyl ionone) used for iris-violet fragrance. Recognized fragrance allergen on EU labelling lists; safe at IFRA-restricted trace levels.

Function

PERFUMING

Skin benefits

  • Iris-violet fragrance note
  • Long-established perfumery ingredient
  • Stable in formula

Known concerns

  • Alpha-isomethyl ionone is an EU-labelled fragrance allergen
  • Skin sensitizer for fragrance-reactive users
  • IFRA category-specific limits

References

EU

EU CosIng database

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

Related fragrances

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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.