Amazing to me how I'm not alone with this:
  My go-to is some no-rinse shampoo they make for invalids and
  astronauts. It's usually by the old ppl stuff in the pharmacies.
  They're the same as us; just older so the same products work
  just fine.

  Oh, foot powder. Brush it through as many times as necessary
  until the white goes away.

  Pulls the oil out on the little talc or corn-starch bits. Works
  perfectly; just try not to breath the stuff in. I usually put it
  on my hands and pat it on, then brush brush brush brush brush
  brush.

  I don't do it for any principles... I just have hyper-sensitive
  nerves that react strangely to regular showering/bathing, so I
  use alternative methods.