A drying aid is a spray-on product applied to a wet car post-cleaning before using any kind of towel for drying. Drying aids are protective, providing lubrication throughout the drying process to avoid any potential scratching, swirl marks or marring of a vehicle's surface.

While both services involve cleaning and protecting your car, they are two different things. Detailing is a process that involves cleaning and protecting the exterior and interior of your car. Paint correction is a process that restores the paintwork on your car to its original condition.