PerfuMate › IFRA limits › Isophorone
Is Isophorone banned in perfume?
IFRA standard: Isophorone · Category 4, 51st Amendment
Prohibited
IFRA prohibits Isophorone in fine fragrance (Category 4, 51st Amendment): it may not be added to a perfume at any level.
Where it arrives only inside another material, the data gives no tolerated figure: the calculator shows the amount and marks it No published figure.
Which materials contain Isophorone?
It also arrives inside other materials. The limit is on the total, so the calculator adds every source together. The largest carriers in PerfuMate's catalog, by their typical composition:
| Material | Typical content |
|---|---|
| Saffron Essential Oilnatural | 6% |
| Saffron (F-TEC) | 4% |
| Olibanum CNC™ (Fraterworks) | 0.028% |
Shares are the catalog's typical values. A real batch varies with origin and season, and your supplier's analysis (GC-MS or certificate of analysis) is the real figure.
A worked example
A 100 g concentrate, bottled as an eau de parfum at 18%:
| Material | Weighed |
|---|---|
| Saffron Essential Oil | 5 g |
| Ethylene Brassylate no IFRA limit | 95 g |
Saffron Essential Oil brings 0.054% Isophorone to the finished perfume. The data gives no tolerated figure for it inside a natural, so the calculator shows the amount and marks it No published figure.
Or paste these lines into the calculator:
Saffron Essential Oil 5 g Ethylene Brassylate 95 g
Questions
Is Isophorone banned in perfume?
Yes. IFRA prohibits it in Category 4 at any level.
Does this limit apply to candles or soap?
No. This is Category 4, fine fragrance on skin. Other products sit in other IFRA categories with other limits, which these pages and the calculator do not cover.