PSP is a special powder wax to add to other waxes to increase their durability, and to protect the base from ice abrasion. For especially abrasive snow, such as newly man-made snow, apply the wax of choice and then iron. While the wax is still in liquid form, or at least still warm, sprinkle the PSP powder over the wax. Even a generous amount will not affect glide. Then iron the powder into the wax layer. Allow to cool, then scrape and brush away the excess. Recommended iron temp: 150°C (302°F). Replaces CH3X.