PerfuMate › IFRA limits › Amber Core
How much Amber Core can you put in a perfume?
IFRA standard: 1-(2-tert.-Butyl cyclohexyloxy)-2-butanol · Category 4, 51st Amendment
1.3%
of the finished perfume, at most
Under the IFRA Standards (51st Amendment, Category 4: fine fragrance on skin), Amber Core may make up at most 1.3% of the finished perfume. In an eau de parfum at 18%, that is at most 7.22% of your concentrate: 7.22% 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 Amber Core its concentrate can hold. If nothing else in the formula carries it:
| Perfume strength | Most Amber Core in the concentrate |
|---|---|
| Cologne, 5% | 26% |
| Eau de toilette, 10% | 13% |
| 15% | 8.66% |
| Eau de parfum, 18% | 7.22% |
| 20% | 6.5% |
| Extrait, 25% | 5.2% |
Which materials contain Amber Core?
Sold as Amber Core itself, counted in full:
A worked example
A 100 g concentrate, bottled as an eau de parfum at 18%:
| Material | Weighed |
|---|---|
| Amber Core | 11 g |
| Ethylene Brassylate no IFRA limit | 89 g |
Amber Core brings 1.98% Amber Core to the finished perfume, against a limit of 1.3%: 1.52 times the limit. To bring it inside on its own, the calculator cuts Amber Core from 11 g to 6.928 g. Or keep the formula and bottle it weaker: the highest strength inside every limit is 11.81%.
Or paste these lines into the calculator:
Amber Core 11 g Ethylene Brassylate 89 g
Questions
Is Amber Core banned in perfume?
No. IFRA restricts it: at most 1.3% of a fine fragrance (Category 4).
How much Amber Core can I use in an eau de parfum?
At 18%, at most 7.22% of the concentrate, if nothing else in the formula carries Amber Core. Every other source counts toward the same total.
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.