The is a great restoration product. It works fast and doesn't damage metal like some corrosion removal products. Apply Glass Luster with a soft Scotch Bright type pad, but make sure it doesn't scratch the surface. Rub in a circular patern untill itis it is fully restored, let dry until it appears chalky and wipe off using a micro-fiber cloth. Do a small area at a time. This product will remove Crystal Shield II.