Rain- X in the shower?

I have a "wet bath," which means we have to wipe down the walls every evening after we shower. It is not easy, but we have no choice -- the trailer is so small that there is no room for a separate shower.

I tried waxing the walls -- it did not seem to make much of a difference in getting the walls dry.

But I discovered that a silicone squeegee really wipes off a lot of moisture. It is then a lot easier to use an old towel to fully dry the walls.