There’s an anecdote about the Emperor Vespasian; his son (and eventual successor) complained about the imperial tax on urinals (at the link there’s a photo of one of Vespasian’s public urinals, which is still in use); the emperor produced a coin and asked his son to smell it. “Does it smell?” “No.” “That’s odd — it comes straight from the urinal.”
Urine was used by fullers for wool processing, among other things.
http://www.italiannotebook.com/art-archaeology/vespasian-urinals/
Well, I knew about the fullers, but BEAUTY TREATMENTS?
Eyew. LOL!