A-MAZ Sealant?s non-abrasive formula protects windows, safety glass, shower doors, mirrors, fiberglass, tile/grout, porcelain, painted surfaces and fixtures against water spotting, mineral stains, acid rain, black streak, soap scum, oxidation and more. Simply clean the surface thoroughly and then apply sparingly. A-MAZ Sealant fills pores and forms a static/fog free shield, sealing the surface immediately.