For maintenance or as a foam shampoo, dilute 20 ml of the product in 1 litre of water (1:50), spray over the entire car, wash with a Fra-Ber high-quality glove and wait for 1-3 minutes before rinsing thoroughly. The product can also be applied with a foaming gun, pure or pre-diluted at 1:3. An application every 3 washing cycles is recommended to purify the surface. For extraordinary decontamination or in case of acid rains, use the product pure or dilute 200 ml in 1 litre of water (1:5), and clean one wet panel at a time using a glove or a cotton pad. Rinse the surface.