I never actually washed mine under a stream of water, but every now and then I'd take the eyeshadows out, clean the palette with wet wipes, and dry it with a paper towel before returning the shadows to their places.
I just take a demi wipe and Q-tips and clean the surface around the shadows...But I never take all my shadows out and physically wash it no...But mine does not get dirty it seems anywhere but the outside cover from hand prints.
Originally Posted by M.A.C. head. I take my shadows out, dip a q-tip or paper towel in rubbing alcohol, and wipe it down. It cleans them off AND sanitizes
I do the same! Alcohol is nice because it dries fast.