Is it possible to apply some kind of sealant/glaze to auto glass, to hide fine scratches? If so, do the scratches remain invisible under all circumstances (such as driving into the sun)?
There is nothing that I have come accross that can remove scratches from glass or even reduce them enough to look any better. I have used many different things, and just when you think you have done some good, they pop right back. So in my experience I have yet to find anything. Maybe some of the others know of something.