Press this sticky clay onto finished surfaces to remove specks of dirt, flecks of paint, and other particles that are not easily washed off. Also known as detailing clay, it pulls up even microscopic contaminants that dull the finish and prevent coatings from bonding to the surface. Use it to prep painted and coated surfaces before applying wax or polish. Spray your surface with water to keep the clay from sticking—this clay will still pick up particles when it's wet. Knead and stretch the clay between uses.