I have been using DMC forever...maybe 50 years and have never had a problem with it bleeding. I also do Counted Cross Stitch and sometimes wash the finished works if they become dingy, like on pillows, etc. Guess if you have some qualms about it, soak it in vinegar water or color catcher or something like that and then lay it out to dry before using it. If you're not using DMC embroidery threads, then maybe they do bleed...I have no idea about the other brands.