Wash the vehicle. Spray the surfaces to be treated with cleaning/lubricant spray (e.g. SONAX Clear Glass) until a homogeneous liquid film is formed. Wipe affected surfaces with the Clay Ball by applying slight pressure and working in circular motions, until dirt is removed. Make sure that there is always a film of lubricant on the surface and that the Clay Ball is not moved across the dry paintwork. Wipe treated areas with a clean, soft cloth. Afterwards, the paintwork surfaces should be treated with a polish and sealed again.