I know this is an old thread, but I've just had a bleeding issue and Retayne was the only thing that saved the fabric. I bought some flannel backing fabric for a baby quilt. I washed the backing with color catchers 3x and it was still bleeding. Soaked it overnight in Dawn. Washed it yet again with color catchers. Still bleeding. Washed it with vinegar. Still bleeding. I washed it with Synthrapol, still bleeding. I finally got some Retayne and washed it with that and it at long last quit bleeding. The color catchers came out white.