Special synthetic hydrocarbon powdered wax which is intended to be added to other waxes in order to increase the durability and hardness of existing wax.
Using CH3X will also strengthen your ski or snowboard base material's resistance to base burn along high friction areas.
In situations of especially abrasive snow, such as newly man-made snow, the proper technique is to apply your traditinal wax of the day then sprinkle CH3X over the wax while it is still in a molten or semi molten state. Immediately follow up by ironing th epower into your wax layer. Allow to cool, scrape then brush out.