If unfamiliar with proper washing techniques: talk to a professional hand wash service, they are all over the city and range from $15-25, Make sure to Do Your Do Diligence to Vet Out Car Wash Services. For BOTH self wash or professional wash used fresh microfiber wash & drying tools/towels. Do NOT use Automatic Car Wash services or brushes (Could cause scratches & Swirls by potential debris build up in wash tools.) Use Non-abrasive soaps/cleaners, proper use of pressure wash is permitted. Wash cont... If the operator has deemed to have been negligent or failed to maintain the painted surface in the correct manner Damage to the coated surface due to improper wash techniques, automatic car washes or incorrect wash tools that may cause abrasion or damaged by third parties not authorized by XPEL