Scratches and swirls are most commonly caused by improper car washing and care. When contaminants are not properly lifted away, they act as little grains of sandpaper. As you drag them across the paint, they leave behind very fine “love marks”. And if you have an obsessive compulsive disorder this is the technique to use. If you want to learn mroe about car detailing and see how a true professional cleaning job is done, check out this post about “expensive car cleaning“. And this one called “cleaning a car to perfection“.