We all have had that favorite dark colored shirt that fades and ends up with a "frost" of fade on it. Next time you buy dark (or bright) colored clothing, set the color by soaking the garment for an hour in a mix of 1/2 cup vinegar, 1/2 tablespoon of salt and 1/2 gallon of water. If the rinse water shows color after an hour, repeat the process. Use this technique only for single-colored items, because multi-colored items may bleed into each other. Multicolored items will likely need to be dry-cleaned. The clothing will still fade, but after many more washes. This will also prevent already laundered items from fading even more.