Using touch up paint with a matchstick is the very best way using touch up paint on a car. You will have to get the carpaint codes to your car located on the inner drivers door panel. That is the place to find paint codes for cars. You can also get the touch up paint from the dealer by using VIN. By using this method you can do scratch touch up as well as chips in the paint. It is far superior than using the paint brush that comes with the small cannister.