If it works for you it the right bowl. I haunt my local Goodwill (thrift store) for ceramic or glass bowls that I think would work. I then apply a two part mix as you apply epoxy making ridges and bumps on the interior (let cure for at least three days.) It's not a truly permanent solution as over a period of time water and use loosen up the epoxy threads. But then I get to play with different bowls and shapes. Have found, tho, that a glass bowl holds the addition a lot longer than ceramic. Plastic bowls fade to fast. I've been playing with a Silicone bath and sink caulk. Not good at all. I'm a cold water shaver so I don't know how long this treatment would last using warm/hot water.