Some airlines use premium bath amenities in their lavatory as part of signaling their quality product. For instance when I flew Etihad earlier this year they were using Le Labo in first class and Acca Kappa in the Residence. I’ve had Ferragamo Tuscan Soul in Singapore Airlines first class.
Usually the best stuff is confined to amenity kits, though, and not the lavatories. And certainly not the lavatories in coach.