The rust dissolver returns rusted surfaces wo bare metal in one simple process without harming the integrity of the metal. Rust Dissolver will also remove heat related blueing and other oxide coatings. Non-oxide coatings such as paint or chrome that are still adhered to the surface will remain intact. The viscous formula is reusable and will not harm plastic, rubber or soft metals. Rust Dissolver works like an acid, but is safe for you and the environment.