Spray onto surface. This high end formula will target and dissolve hard to remove tar. Tar is pH neutral and safe on most surfaces including paint, glass, most rims, and trim, leaving it smooth and ready for the next step in the detailing process. If you have any extra stubborn tar build ups, Gyeon recommends a second application and/or agitating the tar with a wash mitt or a clay bar. Once finished, rinse and wash the panel Tar was used on thoroughly to reveal a squeaky clean shine!