If your eyes glaze over when scanning the car wax section, you're not alone. Alongside the tins of carnauba wax -- once the definitive choice of polish -- is a crowd of bottles, sprays and creams.

Radiant, a silica-based, spray-on sealant from Jay Leno's Garage Advance Vehicle Care line will help protect that fresh paint job or preserve an original one. Unlike wax, Radiant activates a cuing ...