Wheel Dust Blocker. This unique coating agent deposits a layer of ultra-hydrophobic nano-scale silica crystals onto the wheel surface. The water- and dirt-repellency is truly dramatic, nothing sticks! One bottle will treat 8 wheels. How to use the product 1. Thoroughly wash and dry wheels. 2. Thoroughly wipe down wheels with the included sheets. 3. Spray onto the wheel evenly from about 10 cm away. 4. Do not wipe. Allow to dry (20 min at 30℃, 60 min at 10℃) before driving. Note: Do not touch the coated wheels. A temporary white haze may appear. If the haze does not disappear, too much has been applied. *By request/order.