I have a couple ACD apple cinema displays for my ppc PMG4 and G5. This is how I vastly improved a few deep gouges on one of the Apple Cinema Displays. They were deep but they did not damage the pixels underneath & I wanted to use stuff that I already had around the house. 1.) I started with EZ cd scratch remover. This works really well for buffing out real light scratches. This improve the deeper ones as well but they were still noticeable when you buffed off the polish. Subsequently this also did a really great job on polishing up the clear acrylic on the monitor itself. 2.) I took the back leg off the monitor laid it flat and making sure that the gouges are clean & free of lint or dust, I lightly applied Dupont pro-fusion color scratch repair stick. I had originally bought this to buff out some light scratches on my car but thought this was a good solution for filling the gouges. You do not wipe this off, you simply dab the tip of the pen applicator into the gouge and let it fill in. Per the picture you can see that it's not a perfect repair but these gouges were so deep there is nothing IMO (short of replacing the lcd) that would repair it to the point where it was when it left the factory. Nonetheless the end result was very good & almost indistinguishable when the monitor is in use where as before you could clearly see the gouges. Anyhow if you have some older monitors that are Matte and have some bad scratches, I think this would work really well for you. Subsequently, I was not aware of this but goof-off/goo-be-gone type products will cloud the acrylic plastic, so do NOT use it to remove old sticker, label residue. Luckily I tested a small spot on the back of the monitor first, so damage was minimal. The good news is that after a good clean of the area, that EZ CD scratch remover (CD polish) noted above, buffed the fogging right off back to a shiny original finish.