Quickly penetrates every void of metal surface to dissolve rust FAST. The powerful, proprietary formulation takes the hard work out of rust removal and transforms surfaces to like-new condition. Rust-Oleum rust dissolver bath is a specially formulated water-based product designed to dissolve and remove rust and oxidation on a variety of surfaces. It is suitable for use on iron, steel, aluminum, chrome, galvanized metal, porcelain, tile, fiberglass, glass, auto cooling systems and firearms. Apply by brush or as a bath. Rust-Oleum rust dissolver gel and jelly clings to iron, steel and other metals to make rust removal convenient, fast and effective.