Absolutely NOT as long as you use our products correctly with our high quality microfiber towels. The technology of the products has a 10 year history in the UK and USA have been thoroughly tested. Autosardar car clean lifts the dirt off the surface, forming a protective barrier between the dirt and the paintwork. Did you know? Washing your car using the traditional water/sponge method can create “swirl marks” or spider web like scratches on your car’s paint.Even hard water hurts paints in long run.