This fluoride based metal cleaner is the best in the world. It is suitable for all metal surfaces, aluminum, stainless steel, silver, brass, copper, even some anodized metals. This cleaner has zero particles in suspension. It leaves no residue of any kind. It is designed to deep clean the metal even below the surface. It removes all corrosion, dirt, soap scum & old polishing compounds. REMOVES RUST FROM CHROME WITHOUT SCRATCHING, and is very useful in humid climates where rust is a problem.