Come to the Dark Side of the powder room sink.
As much as I'd love to be able to eat and wash myself at the same time, some things should be kept separate for hygiene's sake.
Good smelling bath melty bombs that look good enough to eat? I'll take a dozen!
Let's face it, soap will end up covered in bacteria anyway, why not give it a head start?
It's important to use every part of the beast.
Does your heart die a little when you have to throw away that last little sliver of soap? Now you can save it! You have now personally solved all our ecological problems!