I minimize showering. Been doing that for years. I wash with
  talc/cornstartch/whatever stuff. It grabs the dirt and excessive
  oils off the skin just fine. Also hair as well. Doesn't matter
  if it's wet or dry. If it gets the stale sweat and the dirt off,
  it doesn't matter how. Why do I do it that way? I dunno. I did
  it as an experiment once and found I liked it better than
  soap/water/shampoo stuff. Some things need soap. Hands do for
  example. Feet. But most of the body doesn't really get that
  dirty.