SkinAtlas
Ingredient library / Alpha-Isomethyl Ionone
Fragrance ingredient

Alpha-Isomethyl Ionone

INCI: ALPHA-ISOMETHYL IONONE

A synthetic fragrance ingredient used as a floral (violet/iris/powder) scent modifier in luxury cosmetics. An EU Annex III regulated fragrance allergen; formulators must declare it on-label above threshold concentrations.

Also known as: isomethyl ionone, 4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one

fragranceperfuming

Benefits

  • ✓Violet/iris floral fragrance note
  • ✓Used in luxury perfumes and skincare fragrances

Watch for

  • ⚠EU-regulated fragrance allergen — must be declared on label if >0.001% (leave-on) or >0.01% (rinse-off)
  • ⚠Risk of contact sensitisation in susceptible individuals

Compatibility

✓ Works well with
+ Linalool+ Citronellol+ Geraniol
At a glance
CategoryFragrance
IrritancyLow–moderate
Beginner-friendlyYes
In your routine

Pairs well with Linalool and Citronellol and others.

Found in 6 products
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Products with Alpha-Isomethyl Ionone

CC CrèmeTreatment
Erborian
CC Crème
Concentrated Ginseng Renewing Cream EXMoisturizer
Sulwhasoo
Concentrated Ginseng Renewing Cream EX
Aquaporin CreamMoisturizer
Cell Fusion C
Aquaporin Cream
Eudermine Activating EssenceEssence
Shiseido
Eudermine Activating Essence
The SerumSerum
Clé de Peau Beauté
The Serum
La CrèmeMoisturizer
Clé de Peau Beauté
La Crème