Cleaning agent for the glide zones of your cross country skis that removes dirt and other contaminants that have built up. It also maintains the base by creating a hard and dirt-resistant coating. To use, shake the bottle and then spread the liquid on the glide zone. Let it dry completely (at least 10 minutes) then brush off with a nylon hand brush or horsehair roto brush. Do this before you apply your glide wax, whether it is a hot wax with an iron, liquid wax, or wool application.