Dry car washing is a method consisting of car cleaning and polishing steps without using water. This cleaning method recently became increasingly popular thanks to the creation of specific products – precisely called ‘savewater’ products – which are rinse-free. How to clean your car without water. To clean your car without water, you just need a microfibre cloth to apply the product on the surface in question without water. A microfibre cloth suitable for this application is, for instance, “Extra Brilliance”.