I have never used it on my car's finish. However, I did try it out on my rims. Using the pre-treated sponge was very easy - wiped it on my rims. I let the stuff haze for about 30 minutes and wiped it off - came off super easy. I've had it on for 3 weeks now and the wheels have been washed 3 times. Brake dust comes off very easy - no better, no worse than having used other sealants on it. Perhaps it's a convenient, all-in-one product for someone looking for just such a product. It does have a rather strong solvent scent about it.