Dye-Oxide Patina SeriesThe Dye Oxide patinas do not contain acids; they are UV safe, indoor, or outdoor oxides. These patinas may be applied hot or cold to any metal including iron, steel, and aluminum without causing rust. They are best applied hot; they do not react with the metal. The color of these patinas will remain the same; they will not change as with an acid patina. The metal surface needs to be clean before application. The Dye Oxide patinas are more transparent