Its a bit like oil and water. Zaino is not going to last over a CK product. The look that CK products are designed for is completely diffirent than the look that Zaino is designed to produce, not to mention the differing chemical formulations. If you want a nice deep, wet shine, that will hide imperfections, use VM than RMG than the carnuba of your choice (FK1 Pink is a quality pick). If you want your car to look terrible, use Zaino (just kidding, not trying to start a flamewar).