Use the Nylon brush to finish off your ski and snowboard tuning. If you are only going to have one brush- have Nylon brush as it is the most versatile. If you are racing here is some advice from Dougie Crawford (World Cup Racer) : “I use the nylon brush last, after brass and horsehair. After the other two can’t get anymore wax out of the ski nylon often does. It’s a finishing brush and gives the skis a good shine, Making your skis or board ready to fly! . “