I've washed cotton with acrylic and watercolor painting on it. I took a class where we wet the blouse, then dabbed a little watercolor in the wet areas and let it spread then dry. So essentially we had a watercolor background. Then, after it was completely dry, we painted acrylic flowers in the foreground. Granted, I don't wash it every time I turn around but it has been washed a few times when needed. I think both can be washed after they've completely dried but I'd wait at least a week or two.
Last edited by jeaninmaine; 10-06-2013 at 09:44 AM.