Im a dry cleaner, and here are my recs for keeping your jeans from fading: 1) Always wash jeans in cold water, hot water strips dye fast. Dry cleaning as a cleaning process also helps prevent fading since there is no water. 2) Flip them inside out and close those zippers and buttons while youre at it to avoid damage from mechanical action. 3) Add 1/2 cup of kosher salt, it helps lock in dye (a little). 4) Wash them with similar dark colors, and skip the dryer when you can If you feel like they j