IMAR Professional Grade Glass Polish #1001 is formulated to remove water spots from glass surfaces with ease. It will not scratch the surface of the glass and will leave the surface looking new. Directions: 1) Clean and dry glass. 2) Apply polish by hand or buffer. 3) Allow polish to haze and then remove with a soft cloth. If water spots have become etched into the surface of the glass, additional applications may be required. NOT RECOMMENDED FOR PLASTIC, COATED OR PAINTED SURFACES.