You should wash your car at least twice a month to remove the road grime and film built up over time.
Use a pH neutral car shampoo and use the ‘two bucket’ method, as this reduces swirl marks. Strong acidic and alkaline cleaners can potentially degrade your coating, so avoid these. The use of a pressure washer is recommended and ensure you always use a wash mitt, not a sponge. Ensure you wash the car in straight lines, not in circular motions.
Finally, dry the car with a dedicated towel, not a normal towel. For best results perform your maintenance wash out of direct sun light to avoid water spots.