Am relatively new to this particular forum. I apologize if this has already been covered, but my question is what product and/or type of product is best for protecting against the harsh UV rays of the sun? I am trying to protect the finish of two late model automobiles which don't sit out in the sun a lot but one of them may have before I got it. One is a 2014 Kia and the other a 2012 Cadillac. Finish on both cars is in pretty good shape. Also, should I primarily be concerned about the sun's UV rays or are other contaminants actually more damaging? Live in St. Louis area which sees 4 seasons but none especially harsh. Thanks. I have been using Liquid Glass because my body shop recommended that. Just took a look at the can and it says nothing about UV protection, so it makes me wonder if it's doing anything in that regard.