Equip yourself with a waxing iron and a bar of wax. Melt a few drops of wax by placing the bar against the iron's plate. Using the iron, spread the wax over the entire surface of the base. Then comes the tricky bit: pass the iron slowly over your skis (from tip to heel), without ever leaving the iron too long in the same place, or worse still completely motionless on your skis, as this will damage your base.