It would be ok for a "quick once-over" if the car is almost clean or to remove water marks after it has rained & dried, but I wouldn't want to use it if there is any significant dirt or road grime on the car as there is a good chance of causing minor scratches & swirl marks on the paintwork. I have used Quick Detailer sprays with a nice soft micro fibre cloth if my car has been recently washed & is almost spotless, otherwise it would have to be a proper wash with a lambs wool mitt etc.