When caring for microfiber towels there are a few simple rules to live by. Microfiber towels should only be washed with other microfiber towels. If you wash with other types of fabrics like cotton, etc, the microfiber will retain lint from those fabrics. Wash with Micro-Restore which contains everything you want and nothing you do not. NEVER use fabric softeners or dryer sheets. When drying either hang dry or dry on a very low heat cycle and never leave them in the dryer long enough to heat up. A dry microfiber that is heated to a certain point melts and becomes a danger to paint. Rinsing your new towels in the washer is always a good habit but also be aware that some colors may bleed onto others if you mix colors during that first wash cycle. After use microfiber should be stored, washed, and kept separate according to their task. In other words you would never use a wheel towel and then mix it with your paint towel. Mixing wax and sealant towels with glass and drying towels are a good way to remove absorbency from or cause streaking with your drying towels. Interior or doorjamb towels will collect sand and particles you would never want in your paint buffing towels so keep those separate as well.