Either use a headlight film or have them clear coated
Although I do detail my cars with sealants that also protect from UV damage, I go over the lens' with 303 after each wash...just to be sure. Also, the UV damage usually doesn't appear for several years and even longer when the car is garaged.303 aerospace protectant, I would be more concerned with the inside of the housing lenses because a lot of newer Cadillacs I see have spots and specks on the inside compared to any damage or contamination on the outside.
I have them and see them on other newer Cadillac's, FYI someone here did make a thread about it a while back.Although I do detail my cars with sealants that also protect from UV damage, I go over the lens' with 303 after each wash...just to be sure. Also, the UV damage usually doesn't appear for several years and even longer when the car is garaged.
As for the specks and spots inside the lens', I've got them from the git-go, but never brought it up to the dealership. Now I'm wondering if I should as it certainly does look like imperfections due to poor quality control. Also, perhaps I should start a new thread asking if anyone else has this issue? However, I don't know if I want Caddy to muck around with my headlights