Swissvax Paint Rubber is designed to work optimally with Swissvax Quick Finish, although other clay lubricants may also be used. Before use, divide the clay into several pieces and soften them up in a bowl of warm water. When you are ready to start (after washing and rinsing your car normally, and then treating the bodywork and glass with tar and iron removers), take out one of the pieces and mould it into a patty shape. Next, soak the first surface to be treated with a clay lubricant (e.g. Swissvax Quick Finish) and, using light pressure, begin rubbing the clay over it in straight lines in all directions. Initially you may feel some resistance (as the clay encounters residual contaminants), but this will gradually ease until the clay glides freely, indicating that the contaminants have been fully removed. Swap the piece of clay after each panel or window (to ensure you are always working with a soft piece) and repeat these steps until all of the bodywork and glass is done. Finally, either foam or wash the car again, and then rinse it thoroughly and dry off. Note that if you drop a piece of clay at any point you must immediately discard it, otherwise you run the risk of damaging your car.