I'm going to put my 2 cents in this. I've tried headlight restoration before and I found that the headlight plastic tends to not do as well with Novus products as with the Meguiars Plastic X that could be bought at any auto store. The Novus is too abrasive and the hazy will come back in a couple of days. Meguiars however tend to keep its restored look longer than Novus and does not scar the lense as much.