This is a used item, please check the remaining amount in the photos. I'm organizing my car wash supplies because I have too many. Foaming Acidic Cleaner - Removes water spots, black stains, and brown stains on wheels by lifting them with the double effect of acid and surfactant!! - Because of the high viscosity of the liquid, it becomes a "gel foam" even when used with foam, and stays on the target, so it doesn't drip. - Can be used undiluted or diluted with water at a ratio of 1:1 to 1:2!! - Can be used on the body, resin parts, wheels, and glass, but there is a possibility of staining depending on the material, so be sure to perform a patch test in an inconspicuous area. - Leaving it on after application is strictly prohibited. Be sure to rinse with water. - Regarding glass, please refrain from using it on areas where the wipers pass.