I have used Expel Headlight protection for years. They are a bit pricey, but there really is no other alternative to protecting your headlights if you drive highway often. Installation can be tricky as the adhesive is very sticky. Using a hair blower to heat it prior to installation helps as well as using some soapy water. It will appear somewhat foggy right after install. Fear not, it will clear up after awhile once it dries compeltely.