Eco -friendly. Never use chemicals again! For streak free, spot free and lint free windows, mirrors, stainless steel & much more. Only use water when cleaning. Simply wet the cloth, wring it out hard & wipe. Do not dry your glass or mirrors as they will dry streak-free on their own. The secret is in the weave. Tiny fibers 100 times finer than human hair trap and absorb dirt and oil and will not scratch any surface. Machine wash with detergent & air dry.