Nox-Rust Premium Rust Removing Gel is a water-based, fast-acting, brush-on gel that safely and effectively removes light rust from metal surfaces. The thick, odorless and acid-free gel clings to vertical surfaces, works without scrubbing. It begins to work in 5-15 minutes on light rust. When rust is completely dissolved, wipe or rinse gel away. The clean part is ready for next process, or for storage in VCI packaging.