The Heavy Duty Wheel Cleaner is a pH balanced, non-acidic and non-caustic formula. Its thick solution clings to the surface, breaking down and loosening stubborn brake dust and road grime. It actually changes color as it works. Spray on, allow it to remain on the wheel for 3 to 5 minutes, gently wipe with any one of the cleaning tools and rinse clean. Safe for use on any wheel finish; painted, chromed, uncoated aluminum, powder coated and anodized.