Headlight Protection? (i.e. StonGard, etc.)

Hello, I just got e-codes and don't want to install them until I get some sort of protectant on them first, as my original headlights are pretty pitted/scratched, being plastic and all.
If you have headlight protection film on your headlights, please let me know what it is (brand, etc.) and where you purchased from. I appreciate it! Thanks!
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