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Fragrance allergens › Coumarin
Coumarin (CAS 91-64-5) is one of the fragrance allergens the European Union requires to be named on a label once it passes a threshold. It is rarely something you added on purpose: 55 materials in this catalog carry it as a constituent, which is how a formula ends up over the line without a single line item admitting to it.
How much Coumarin can go in a perfume (IFRA limit)
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Natural coumarin isolated from cassia bark: warm, sweet hay and tonka with a spicy, cinnamon-like edge and hints of almond, tobacco and custard. Spicier and more pungent than synthetic coumarin, without its cherry note; for fougeres, tobacco and vanilla accords.
It is a material in its own right, not only a line on a label: its catalog page carries the full profile.
20 of the 57 carriers in this catalog are naturals and 37 are synthetic. The heaviest carrier that is not the molecule itself is Coumarin ex Cassia, at about 99%.
Estimates from typical published compositions, not a certificate of analysis for your bottle. A supplier's own figures always win.
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. Start a formula, free. No account needed.
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