: I also have a black car ,"zaino-ed" my car last weekend-looks great!- it's also real easy to apply and remove. It's a 2 step process, pre-cleaning and polishing (after washing). : Zaino makes a special polish for swirl marks (called the Z-5), after a few applications of the Z-5, you can switch to Z-2, which is supposed to enhance the gloss the more coat you put on it.