Red Eye Glass Cleaner is a special solution designed to clean water pipes, hand pipes, hookahs, grinders, ashtrays and other smoking related accessories. The special cleaning crystals will break down resin, gunk and difficult stains in hard to reach areas leaving your smoking accessories sparkling clean! Shake the bottle to make sure the abrasives are suspended in the liquid. Pour the desired amount into your bong. Do not add water. Shake vigorously until clean. Rinse thoroughly with water. Alternatively, you can place small items like hand pipes, pull-outs & downstems in a zip-lock bag. Soak for 5 minutes and then shake vigorously until clean. Rinse thoroughly with water.