Here's a trick that really works. It came from waaaayyy back in the 80's when I worked at Benetton. Remember those popular rugbys? Ya know the white ones with the stripe. Well they always ran. We used to instruct our customers to, before the first wash soak the garment in one cup of white vinegar in a sink full of cold water. Ya know it worked! It set the color. So now whenever I have something that has a white collar or anything that might really bleed, I do the white vinegar soak.
Cynde