I wash mine every other day, as it gets brittle if I wash it every day, no matter what products I've tried.
I always wash it when I shower, before I go to bed, so I don't damage it more with the dryer. (If I'm going out, on day one or day two, then I always tend to wash it again) Then, every other day, because I'm not washing my hair, I get to have a lovely long hot relaxing bath!
K