Ingredient
Alpha-Isomethyl Ionone
A violet-like fragrance component required to be named on the label above a threshold.
- Fragrance or scent ingredient
- Named on packs under EU labelling rules
What it is there to do
Fragrance
Gives the product its scent, or masks a base odour.
Where this comes up
The notes BeautySignal puts beside this ingredient when it is on a label.
- Contains fragrance
This product contains fragrance. Fragrance is one of the more common causes of contact irritation, which is why many people prefer to avoid it.
Why we mention it
Fragrance is the most frequently cited preference in cosmetics, and "parfum" on a label can cover many undisclosed components.
- Declared fragrance allergen
This product declares one or more of the fragrance substances that EU labelling rules require to be named individually.
Why we mention it
Regulation (EC) No 1223/2009 requires certain fragrance substances to be named on the label above a threshold. Their presence is a labelling fact, not a prediction that anybody will react.
What the rules say
Each line names the rule it comes from. A limit is not a warning.
EU · Restricted
Regulation (EC) No 1223/2009, Annex III — fragrance substances subject to individual labelling
What it sets out
Must be named individually on the label above 0.001% in leave-on products and 0.01% in rinse-off products.
What we don't know
- Where it comes from — plant, mineral, synthetic — isn't recorded.
- How much of it is used in any particular product. We hold no concentrations at all.
This is information about an ingredient, not medical advice, and not a judgement about any product that contains it. Back to the reference.