Catalog › Fragrance allergens
The European Union names a list of fragrance allergens that have to appear on a label once they pass a threshold. Almost none of them arrive as a bottle you poured on purpose: they come in inside naturals, a few percent at a time, from materials whose names say nothing about them. This is that map run backwards, across 1,581 described materials.
PerfuMate totals these across a whole formula while you compose, counting the same molecule arriving from several materials at once, and writes the declaration for the back of the bottle. Open the bench, free and without an account.