Found a really nice bright red piece of fabric in my stash that had to come from a garage sale. So, I threw it in a bucket of cold water with a 1/2 cup of vinegar. I also threw in a piece of white material just in case my eyes were failing me. Anyway, I've let it soak twice, and both times the water is reddish.
My question is, would it help if I put it in the dryer to help set the color. By the way, the white piece of fabric is still white!