K.F.
Shout makes a product called "Color Catcher" that you put in the wash. It looks kind of like a fabric softener sheet. It "traps loose dye" from bleeding fabrics and the wash water. You can find it in the same area with regular Shout. I use it in all of my red & dark loads to keep the colors out of the white parts. Why they make clothes with both colors together, I'll never know. They're cute but high maintenance, huh?