Can't remember the name of some movie about water?

I can't remember it very well, sorry lol. I just remember certain parts like people having to shower with powder stuff to hydrate their skin, and some little machine thing that sucks the water out of peoples skin. I can't really remember much... Can anyone attempt to guess what it is from such little details? :P I can't remember the name of it... Also I think there were some weird *** kangaroo things in it... O.o