Rust-Oleum Stops Rust, Rust Reformer is for designed to convert rust into a non-rusting surface, no sanding required. For use on rusted metal only, the corrosion-resistant spray is compatible with most solvent and oil-based paints. Durable, corrosion-resistant formula is compatible with most solvent and oil-based paintsIdeal on interior / exterior rusted metal surfacesOil based product, Apply several light coats a few minutes apart to prevent running and saggingDries to the touch in 20-40 minutes and can be recoated after 24 hours