THE SHORT ANSWER
What is wash & wax?
A wash and wax pairs exterior cleaning with a suitable wax or protective product. It does not correct deep scratches or replace damaged clear coat. Product choice and preparation affect both appearance and maintenance.
Preparation comes first.
Protection works on the surface beneath it. Road film and loose debris need to be removed before a wax is considered. If the finish feels rough or shows heavy spotting, ask whether additional preparation is needed and whether it is part of the quote.
Choose protection for your routine.
A car that lives outside has a different routine from one used on weekends and kept in a garage. No single duration fits every vehicle. Product, weather exposure, washing habits, and mileage all influence how protection behaves between appointments.
Wax is not a coating or a repair.
The words wax, sealant, and ceramic coating describe different product categories and service expectations. Avoid choosing on a label alone. Get the exact product category and aftercare requirements in writing, especially if a vehicle already has protection installed.