Hello guys, recently I noticed a little scratch on my Laptop's LCD Screen. Every time I wanted to remove scratches I used a pencil's eraser which actually did the job pretty well. This time, it left a white-glossy spreaded stain. Tried to rub it with a cloth, water, alcohol, nail polisher, vinegar, toothpaste but nothing actually helped. So the stain came from the eraser and it's only visible when the screen is off.
What would you recommend me to use to completely wipe out the anti glare coating in able to make the whole screen look the same so then I can buy an Anti-Glare screen protector from Ebay and put it over the screen?