Shooting clear on aluninum

I have yet to see what UV additive is used in either clear coat or a topcoat labeled on a container. There are three Tinuvins that I am personally familiar with. Usually the name of the product and the amounts are proprietary. How would I know? I MADE the **** for over 12 years. Do I know everything there is to know? Absolutely not, but I have seen a lot of formulas/recipes and a lot of labels, and it looks as though I will be going back to doing that again real soon.