It's just clear basecoat used for the reasons above.If you do have a paint mistake over it remember it's basically the same as a coat of base so not only is it not solvent proof but it will also sand right through if you get down on it.I believe 4 coats is max at one time but you still want to keep everything as thin as possible.If you want a couple coats of this for something you're better off with 2 coats of good clear to sand and keep going.