MAR GEL PLUS is a unique, innovative stain remover specifically formulated to remove rust stains from acid-sensitive materials such as marble, limestone, and travertine. MAR GEL PLUS is able to penetrate deep into the material, even into the most compact lime-based surfaces, such as brushed or polished finishes.
After treating rust stains with MAR GEL PLUS, the next step is to treat with OXIDANT. MAR GEL PLUS reacts to remove the rust, creating a purple compound that turns darker according to the depth of the rust stain. OXIDANT when applied after MAR GEL PLUS can remove these residues remaining inside the stone, completing the stain removal process.