I have had the same problem with red / purple and some blue DMC bleeding. Have not found a solution - but there are a lot of Grrrrrrr's coming from this corner after spending about 800 hours on a project.
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DMC Thread bleeding by: Anonymous
I made a set of lovely dishtowels using DMC embroidery floss. When i washed them after completion the dark purple floss bled all over the towels that i used it on. I too would like some idea how to get this bleeding out.