There are many good wax products to choose from, full synthetic "waxes" will last the longest, 4-6 months, carnauba's will last 4-8 weeks. Depending on the shape of your paint you may need a paint cleanser product first, once you do that if you clay your paint once or twice a year it will keep any contaminants fropm building up on your clear coat, that makes your "wax" last longer, and your paint shine better.