Yep, if you put on multiple layers of SG it'll last SO long that when it eventually gets marred etc. and you redo, the SG will STILL be hanging on. Always depends on how the vehicle gets treated, but the ones *I* use Klasse on only need a full exterior detail once a year. I do, however, put on a layer of SG every few months just to keep that "just SG'ed" effect. But even when I don't (let one panel go for a year! No problem!) it still holds up just fine.