To ensure a sleek and perfect paint finish, the use of a heavy or medium cut compound such as Scholl Concepts S20 Black, S3 Gold XXL or S2 Black is recommended, prior to applying W9. W09 is recommended for conventional and scratch-resistant, fresh and used paintwork. In addition to its excellent protection features, W9 will also remove swirl marks and holograms in one step when applied with a machine polisher and the Scholl Concepts Premium Orange Pad.