Retayne is an Anti-bleeding rinse. Use it to "fix" dyes in commercially purchased cotton fabrics or clothing to prevent color bleeding during washing. Also use to add wash fastness to your own dyeing. For example, if you printed a text message on fabric, you can use retayne to to set it. If you have a piece of fabric you know will fade, you can use retayne to keep fading to a minimum.
Directions are on the bottle.
16 oz bottle (usage rate is 1 tsp. per yard of fabric)