These water base acidic solutions are applied over the Reactive Metallic Paints. They will react with the real metal particles in the paints, thus speeding up the oxidation process. The Green and Blue Patina Aging Solutions can be applied to Copper or Bronze Metallic Paints. These paint and aging solution combinations will create a beautiful, authentic Green or Blue Patina. The Rust Activator is applied to the Iron Paint. This combination will create a real weathered rust finish. It is recommended that you use Modern Masters acid blocking primer in conjunction with the Iron paint and Rust activator.