It doesn't really do any good. I bought some to try because I had some stains on my front bumper that just weren't coming out with anything else. The color cure did a good job at not making them as noticable. I wouldn't use it to hide swirls or anything like that. It is a product that does have a use, just maybe not the use it advertises. You just need to experiment with it and see what it works for in your case.