PerfuMate › IFRA limits › Longifolene
How much Longifolene can you put in a perfume?
IFRA standard: Longifolene · Category 4, 51st Amendment
1.5%
of the finished perfume, at most
Under the IFRA Standards (51st Amendment, Category 4: fine fragrance on skin), Longifolene may make up at most 1.5% of the finished perfume. In an eau de parfum at 18%, that is at most 8.33% of your concentrate: 8.33% of every 100 g.
What the limit means at your strength
The limit is on the finished perfume, so the stronger the perfume, the less Longifolene its concentrate can hold. If nothing else in the formula carries it:
| Perfume strength | Most Longifolene in the concentrate |
|---|---|
| Cologne, 5% | 30% |
| Eau de toilette, 10% | 15% |
| 15% | 10% |
| Eau de parfum, 18% | 8.33% |
| 20% | 7.5% |
| Extrait, 25% | 6% |
Which materials contain Longifolene?
Sold as Longifolene itself, counted in full:
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 | Alone at 18%, at most |
|---|---|---|
| Fossil amber oilnatural | 3% | no limit on its own |
| Cedar Atlas Heart, Natural™ (Robertet) | 0.6% | no limit on its own |
| Arabian Oud (F-TEC) | 0.0247% | no limit on its own |
| Broom (F-TEC) | 0.0062% | no limit on its own |
| Oud Oliffac™ (IFF) | 0.001% | no limit on its own |
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 |
|---|---|
| Longifolene | 12 g |
| Ethylene Brassylate no IFRA limit | 88 g |
Longifolene brings 2.16% Longifolene to the finished perfume, against a limit of 1.5%: 1.44 times the limit. To bring it inside on its own, the calculator cuts Longifolene from 12 g to 8 g. Or keep the formula and bottle it weaker: the highest strength inside every limit is 12.5%.
Or paste these lines into the calculator:
Longifolene 12 g Ethylene Brassylate 88 g
Questions
Is Longifolene banned in perfume?
No. IFRA restricts it: at most 1.5% of a fine fragrance (Category 4).
How much Longifolene can I use in an eau de parfum?
At 18%, at most 8.33% of the concentrate, if nothing else in the formula carries Longifolene. Every other source counts toward the same total.
Does Longifolene from essential oils count?
Yes. The limit is on the total in the finished perfume, whatever brings it: Fossil amber oil typically carries 3%. The calculator adds every source.
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.