The grit is so fine it will not scratch the glass the way that woodworker sandpaper, steel wool or other abrasive products can and will. ... Cut it to a size that feels comfortable in your hand, as you are going to scrub the glass. Wet both the glass surface and the sandpaper with water to provide a lubricant.

Can you use sandpaper on glass?

Silicon carbide papers are most common of all. They are also known as wet/dry sandpaper and can be used on various surface types, including hard and softwoods, glass, plastic, and metal.

What sandpaper will not scratch glass?

Wet/Dry Premium Waterproof Sheets is your best choice. This is a 12-sheet assortment of finish sanding paper ranging from #1500 to #7000 grit. The grit on this type of sanding paper is so fine it will not scratch the glass, the way that woodworker's sandpaper, steel wool or other abrasive products might.