Tip of the Day #63: Preventing clothes from Bleeding
To prevent new or coloured clothes from 'bleeding,' soak in salty water for half an hour. The salty water helps the dye "set," which keeps it on your clothes instead of in the wash water. Also, soften your water with white vinegar. Hard water transfers colors in the wash more easily, but it is easy to soften the water with 1/2 cup of vinegar every time you wash.