The Shiny Garage Sour Shampoo & Foam is for use with a foam lance or foam sprayer and made for ceramic coated paint. It removes fresh mineral deposits. As a shampoo, Shiny Garage recommends 20-50ml in 10L of water, or 50-100ml in 5L for heavier dirt. As a foam, dilute 100ml in 1L of warm water in a PA foam gun. Use it in a bucket at the dilution on the bottle, wash from the roof down with a clean mitt and a second rinse bucket, and rinse each panel before it dries. Keep it away from eyes and out of reach of children, and store it upright out of direct sunlight.