There was a rack of potions stored towards the back of the store. Among them, actually placed prominently, was one labeled “Sexy”. That was all.
The idea behind it was just as simple. This potion didn’t change the drinker’s race or gender. It didn’t even change their age. All it did was make the drinker highly attractive. They may or may not resemble their normal selves at all, and their clothes would be changed as well. The effects wore off after 24 hours. But if one drank the whole bottle, they’d be permanently transformed into their more attractive alter ego. And best of all, the bottle automatically refilled itself magically, when it had been used.