There’s a similar situation with alcohol in the EU/Switzerland, where alcohol can be tax exempt if it has an added ingredient that makes it unfit for human consumption.
For perfumes, Wikipedia knowledge says this tends to be Diethyl phthalate ((DEP) is a phthalate ester. It occurs as a colourless liquid without significant odour but has a bitter, disagreeable taste)
They also mentioned something similar briefly on the podcasts episode: apparently there was a French law prescribing that anything that can be consumed by humans is required to list all ingredients (I surprised, as I’d have massively thought that these kind of laws have centuries later). This marked the beginning of perfumes no longer being marketed as healing beverages.
There’s a similar situation with alcohol in the EU/Switzerland, where alcohol can be tax exempt if it has an added ingredient that makes it unfit for human consumption.
For perfumes, Wikipedia knowledge says this tends to be Diethyl phthalate ((DEP) is a phthalate ester. It occurs as a colourless liquid without significant odour but has a bitter, disagreeable taste)
They also mentioned something similar briefly on the podcasts episode: apparently there was a French law prescribing that anything that can be consumed by humans is required to list all ingredients (I surprised, as I’d have massively thought that these kind of laws have centuries later). This marked the beginning of perfumes no longer being marketed as healing beverages.