Run June's Miracle Cloth under warm water to rinse before the first use to avoid possible streaking from manufacturing or packaging residue. Machine wash with detergent, air dry only and do not use fabric softener. Only use water when cleaning. Simply wet the cloth, wring it out hard and wipe. Do not dry your glass or mirrors as they will dry streak-free on their own. 3-in-1 Miracle Cloth cleans, polishes and shines - scratch free, spot free, lint free and streak free every time.The secret is June's uniquely blended fiber weave engineered for optimal softness, durability, and absorption.Never use chemicals again. Simply, wet it, wring it and wipe any surface.Works on any surface - windows, mirrors, countertops, stainless steel, ceramics, wood surfaces and more.