AKA: 3-Methyl-4-(2, 6, 6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one, (3E)-3-methyl-4-(2, 6-trimethylcyclohex-2-en-1-yl)but-3-en-2-one, Alpha-isomethylionone, 127-51-5, Cetone alpha, Alpha-iso-Methylionone, Isomethyl-alpha-ionone, Isonaline 70
WHAT IS IT? Synthetic
Fragrance
Skin Conditioner
Not Clean
Origin Alpha-Isomethyl Ionone belongs to the ionone family of synthetic aromatic compounds derived from petroleum-based chemical precursors. It is synthesized through multi-step organic chemistry processes involving condensation and hydrogenation reactions of aromatic compounds.
3-Methyl-4-(2,6,6-trimethyl-2-cyclohexenyl)-3-buten-2-one; Methyl-gamma-ionone; gamma-Methylionone
State
Dry Powder, Liquid, Other Solid; Liquid
IS IT FOR ME? Pregnancy & Breastfeeding Safe
Caution
FLAGS Allergen Warning
⚠️ EU Fragrance Allergen
WHAT’S IT DO? Functions
Perfuming
Added for scent. Can be natural or synthetic. Common irritant and allergen — one of the top reasons people react to products.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
CAN I TRUST THIS? The paper trail
🛡️ Safety-assessed 1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
IS IT CLEAN? Regulatory Status
JAPAN ✔ permitted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR
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