Headlight armor, XPEL, a couple others. They make a thick mil cover that sticks on. Has worked very well for me for many years. Rest of the front end on my 12 year old 200K Sonata is beat to crap. Headlights nice and clear. no rock chips on them or my fogs.
I just picked up a different brand for the Pilot but the film is not as thick. Not sure about it yet. I'll install but will need to monitor.