No polish, UV protector will help with impacts from road debris. I have used a thick plastic film on my headlights and fog lamps for years. There is a nick in one of the films from gravel, it is small and is in only the film. The gravel did not hurt the lens itself. I only polish the lens with plastX as the film is UV protection. (xpel.com) They have a kit for $70 which includes headlight and fog light, available as clear or dark smoke. A bit expensive, but much easier on the pocket book than replacing a headlight. I think that is what the Kurtp13 was looking for.