Comment by xk_id

There’s Chinese analytical labs which identify the fragrance molecules in a perfume. You just have to send them a sample. The caveat is if the perfume used natural oils or captive materials; then the lab won’t be able to identify everything. There are also leaks of formulas that are circulated in perfumery circles; many famous perfumes are already known. Anyway you can then purchase the individual materials and recreate the perfume.