Micro Sealer Quartz Guard protects all types of glass surfaces by providing a hydrophobic coating that is water, soil and stain resistant. The sealer eliminates hard water build up, mineral deposits, soap scum, dirt, grime and bacteria. It seals the pores in the glass surface and also provides scratch and abrasion resistance. It can be easily applied to glass. It is highly effective in windshield and industrial applications including bathroom shower doors and mirrors.