Do yourself the favor of keeping the new ones looking new. I just had new headlight housings installed and won't drive it until the dude comes to my house to do the work. He's driving 30 miles and will charge me $15 for the labor! Heckuva' deal.
I had the fogs replaced recently and will polish them before the film goes on.
http://www.xpel.com/products/headlight_protection.asp
http://www.lamin-x.com/