Skis and snowboards should be waxed regularly, especially when they have been used in the softer, slushy snow of springtime. Experts from the German Ski Association (DSV) warn that the damp snow pulls the wax out of the pores and the surface becomes less glossy. To prevent your equipment from losing its all-important gliding properties, you should wax the bottom surfaces at least every second day of skiing. You don’t have to go to a specialist ski shop every time – you can also treat them yourself with shop-bought liquid wax. In spring, while the slopes might still be hard and smooth in the ea…