EU legislation forced many perfume companies to reformulate their fragrances with compliant ingredients - lot's of weird natural stuff replaced with synthetics. This might have made it easier to dupe since sourcing becomes standardized. Fragrances also smell different post reformulation, lots of new coke experiences except they can't go back, prices also have been rapidly growing like many luxury products. Except perfumes have a shelf life.

IMO fragrances is ripe for distruption. Many developing countries have phone repair like perfume shops where you mix your own shit, and a lot of it smells very nice/sophisticated.

Youtube influencers have destroyed 'face brands' people have come to see them as vapid fakes, and all the movie/TV actors are lumped in with them. Then there are the added AI similars that add to the decline = we armor ourselves to ignore them - like all ads.It is similar to the way British so called 'high class or related to Lords/Ladies' and they dressed to set themselves apart. You still see remnants in the UK - but it is fading with time. All these Chinese fake brands make me laugh - the Chinese are deep into it, as we see with regular US Customs bag/clothing/perfume/etc seizures.

But, but...what about https://duckduckgo.com/?q=health+effects+of+perfume+use ?

The cheap dupes probably even more so, than the established brands.