Ingredients · Powder · dry-down

alpha-Isomethyl ionone

Say itAL-fuh-eye-soh-METH-il EYE-uh-nohn

Soft, powdery orris-violet with a clean woody, slightly leathery undertone.

What it is

A molecule made in a lab.

When you smell it

Dry-down: hours later.

What perfumers do with it

Everyday powdery-iris builder in florals, chypres and lipstick accords; smoother than plain ionones.

Worth knowing

It has been one of the 26 fragrance allergens that EU cosmetic labels must name since 2005.

Rules

Limited. IFRA limits (49th Amendment); one of EU's 26 label allergens

Also called

Methyl ionone gamma (coeur); Isoraldeine; Cetone Alpha

On the label of 110 of the 232 perfumes read so far

No. 5Chanel · printed “Alpha-isomethyl ionone”ShalimarGuerlain · printed “Alpha-isomethyl ionone”MitsoukoGuerlain · printed “Alpha-isomethyl ionone”Eau SauvageDior · printed “Alpha-isomethyl ionone”Acqua di GiòArmani · printed “Alpha-isomethyl ionone”LibreYSL · printed “Alpha-isomethyl ionone”

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