Zeiss Microfiber Cloths can be used dry for a quick, convenient lens cleaning or with Zeiss lens cleaner for a more thorough cleaning. The non-abrasive, super absorbent cloth easily lifts dirt, dust and skin oils off any lens. For eyewear, apply cleaner to both sides of the lens and gently dry with the microfiber; for small areas or other lenses, apply the cleaner directly to the microfiber cloth then clean the surface area. Remember cloths can scratch when overly dirty - for best results, machine wash occasionally. Do not use fabric softener.