I just applied the product so I don't know how good it will be in the long run. I had an issue with the applicator, as you can see in the picture, it came off and was hanging by a thread on my SUV about 1/2 after the first application. I looked at the bottle and finally changed my method. I started being very gentle with the sponge applicator, squeezing the bottle to squeeze the product out instead of squeezing as instructed. I barely applied two coats before the sponge fell off completely. I have another bottle of a similar product that I will use in my wife's car and see if it works better. Squeezing the bottle to get the product is pretty messy and I didn't like the sponge coming off.