fragrance

Alpha-Isomethyl Ionone

Watch if sensitive·Strong evidence

Alpha-isomethyl ionone is a violet-scented fragrance material and one of the EU-listed allergens requiring label disclosure. Documented sensitization is more common with this ingredient than with many other listed fragrance allergens.

Worth knowing

EU-labelled fragrance allergen
Known contact sensitizer for some
Restricted in the EU

EU named-label disclosure required above 0.001% leave-on / 0.01% rinse-off.

Gentler alternatives

Linalool

Products with Alpha-Isomethyl Ionone

74
Dove Men+Care
Clean Comfort Body and Face Wash

References

SCCS Opinion on Fragrance Allergens in Cosmetic Products ↗
CIR ingredient search: Alpha-Isomethyl Ionone ↗

Cosmetic information for general education, not medical advice. A verdict is a reading of the published evidence, never a guarantee for your skin: any ingredient can irritate someone, so patch test new products and see a professional if you react. Concern is graded on cited evidence, never on hazard-score lists. See how we score.