GYEON quartz Cloth Gyeon Iron Remover | Wheel Cleaner | Paint Cleanser (500 ml) GYEON quartz QM Iron is one of the most efficient, fast-reacting iron removers on the market. This product was specially developed to decontaminate surfaces from harsh ferrous deposits such as brake dust and rail dust easily. QM Iron is Ph Neutral and safe on all finishes, even polished wheels. Rinse the surface well. Spray generously with QM Iron. Wait for a couple minutes. If needed, agitate with a brush or quality mitt. Do not let dry. Rinse with a pressure washer.