16 oz. Heavy Duty Water Spot Remover by Chemical Guys®. Understanding Water Spots. Water spot damage begins as droplets of water land on paintwork and other automotive surfaces. As the water evaporates, all the minerals inside the droplet are left behind as a stain on the surface. If caught soon enough, these minerals can be simply wiped away during a car wash or with a quick detail spray. If left overnight, the spot may stick harder, but they can typically be removed with a clay bar. Heavy Duty Water Spot Remover can help neutralize the basic alkalinity of the water spot minerals and remove them from the surface. If the water spots are left for a day or more in the hot sun, the minerals bake onto the area and begin reacting with the surface.
