HG Rust Remover 500ml is a highly effective solution for removing rust stains from metal, ceramic, and stone surfaces. Its powerful formula quickly dissolves rust, restoring the original appearance of affected items. Easy to use, it ensures surfaces are clean, rust-free, and protected against future corrosion. To use, dilute the remover in a solution of 1 to 5 with water, allowing between 10 minutes and 12 hours for the remover to work. Rinse thoroughly with warm water. For best results, consult the back of the pack for details of use with various size objects. This biodegradable rust remover comes in a 500ml size.