There's someone who's on the board who sells Retayne at their website/shop. I forget the name (sorry), but the info. is in another thread re: washing batik jelly rolls. (I had a similar question .. about washing jelly roll strips if they happened to be batiks..).
Still haven't bought the stuff, but I will. I'm not ready to use those batiks yet... still got two other wips and need to whip up!