He said that the uv blockers are on the surface, so if I sanded and buffed the paint would fade in the sun. He said for a show car he would do so, but because It's a daily driver not to sand and buff for the reason above.
I don't understand because it was painted with a single stage, so the uv protection should be integrated into the paint.
The things about the paint job that disappoint me are, some dust on the surface in one area, some fish eyes in another, and the mirrors were not removed when painted, leaving the primer that I sprayed on the mirrors when I removed them, visible from the interior of the car, also Overspray on the drivers side window between the glass and mirror.
Some coating similar to rhino lining was applied to the rocker pannels where I was having rust issues, It's also on the lower part if the front bumper for an unknown reason.