Steel Wool scratches?

Not every steel wool is bad for glass, try the 0000 steel wool its the finest steel wool available and will not harm the glass, what it actually does scratch the windows or whatever you run it through, but it removes all dirt or whatever else is making your glass dirty, but the scratches are so fine that you can not see it with the naked eye, giving you a really clean surface that is a professional level but done at home for a fraction of the price.