Yes, but you want to make sure the wax is fully cured. I also get better results if I wash the car first, but truth be told I seldom top a carnauba with any of the WOWA sealers. Sometimes I lay a base of UPGP down and then top with a carnauba later for a little more warmth and depth. It just depends on the car (what durability I'm looking for) and to some extent the color; I like OS and UPGP but I personally love the warmth and depth certain carnauba's leave on a dark, especially red or black, car.