Default Screen Polish to get rid of scratches?

So my Nexus 5 took a bad spill today and the top part of the back cover kind of popped loose and there was a faint scratch on the screen. I popped the hinge back into the phone so that seems to be okay but this faint scratch is about 2.5 inches long on the screen. I can't actually feel the scratch but I can see it. Does anybody know of a polish to help conceal this?
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