*morlack: wow hello there fellow innova owner, the headlights of the innova is plastic so for very light scratches you could use Meguiars PlastX around 700+ and Mothers Plastic Polish around 400. If the scratches are deep, you might have to get yourself a headlights restoration kit, Meguiars and Turtle Wax already have them and i've tried them before with great results, Mothers just released their Headlights Restoration kit which i have not yet tested but the Megs and TW are great products and im sure Mothers will also perform great. For protecting the headlights, sadly there are no available protection against scratches unless you put a plastic film like expel or something, for protecting against fading and discoloration, Mothers Plastic Polish works best for me since it also provides protection