I prewash every piece of fabric that comes in the house. I also test fabrics for bleeding, and if they bleed, I treat them with a dye setting solution that I bought online (not retayne) --This product is relatively inexpensive, and I've never had it fail. I have asthma, so I prewash everything, to prevent bleeding, but most importantly, to eliminate the possibility of respiratory reactions to chemicals in fabric. I've never had a fabric bleed after treating it.