The Poorboys sealant (the pink stuff in a tub) is more of a wax, not a sealant and certainly not a ceramic.
As such, you need to reapply it every few months. It's good, but more labour-intensive than Gtechniq C5 which, again, isn't a ceramic but a sealant, and will last about six months before the need for re-application.
I don't have any experience of using a ceramic sealant on wheels, but it's one part of a car which would certainly benefit from a long-lasting solution, especially if the wheels are an intricate design, and hard to keep clean.
