The Shurhold Industries Buff Magic Compound and Magic Wool Hand Pad is designed to remove hard water stains on glass. Add a small dab, work the product gently in small tight circles until it turns hazy, then buff clean with a dry, microfiber cloth. This product removes oxidation, staining, surface rust and minor scratches. The Magic Wool Hand Pad is an ultra-fine, pure bronze scrub pad ideal for use on chrome, stainless steel and aluminum.