Clean skis are fast skis, and glide waxing alone often just dilutes the dirt. And while ski glide paraffins can make a ski fast they are notorious for picking up any contaminant that is in the snow. Rex UHW Glide wax cleaner is a crazy chemical solution that will clean the old glide wax from your ski bases, but instead of drying out the base it will leave a new layer of a non-fluoro Ultra Hard glide wax. This residual layer can be used as a glider by itself in training situations but is best thought of as a new durable base layer that will improve the performance of any liquid or ironed on glide wax.