Proper lens care: When glasses are worn often, they tend to accumulate oil and debris. Be sure to use cool water to gently rinse the debris off your lenses prior to wiping them. Make sure you're using a clean microfiber or lint-free cloth (if the cleaning cloth has accumulated oil and debris, it's best to launder it prior to using it). Use the clean microfiber/lint-free cloth to gently dry your lenses. Avoid applying excessive pressure. Only store your glasses in a cool, dry place. Do Not Use The following can damage your lenses, do not use: Optical lens cleaners Alcohol Face wash Harsh chemicals Detergents (Windex, laundry detergent, abrasive dish soap, etc.) Paper towels that aren't meant for optical lenses Tissues that aren't meant for optical lenses