Apply the cleaner generously on the surface and swipe it dry directly with a microfiber cloth. Do not use too much pressure. Streaks arise, if the liquid is not being removed directly or if too much pressure is being used. If streaks arise on dark and shiny surfaces, the evaporation time can be extended by using our Retarder – mixing ratio 5:1 to 2:1 (Cleaner : Retarder). Wash the microfiber cloth before first use at 40°C and do not soak the cloth with too much liquid.