I had 2 pair of them installed on my new headlight. So far (6 months) it still looks good as brand new.
https://www.xpel.com/products/headlight_protection.asp
Alot of folks here might wonder about clearing their foggy headlight. U wouldn't if u had a pair of this on in the first place. I recommended this to all that just bought new headlight, especially retro-fit project, people.
They are all custom re cut, you just tint them like the way you tint windows (even easier). They come with color of choice (smoke, yellow, blue and of course clear). U cant see them on my camry cuz they are clear.
Hint: After installation, they might appear to have some milky spots, dont freak out, they are just trapped moisture and will go away in 1 week.