The Black Sapphire will swirl in the sun no matter what. I wax my car at least 2x a year and hand wash it myself, but no matter how much care is taken, you WILL see some swirls...as with all dark color cars. Also, you have to be diligent about washing the car after the rain, else you'll get water spots burned into the paint (clearcoat) being that So Cal rain drops are so pulluted. I already have a few (water spots) burned onto the hood after a couple of years, but still too lazy to break out the clay. But the Sapphire sparkles are so pretty to look at in the sun and it is soooooo nice after a clean wash and wax!