When it comes to winning speed events, one of the most important team members may come as a surprise: the wax guy. “You can lose it if you blow the wax,” says Matt Schiller, head U.S. ski technician for the World Cup. Each tech is an alchemist with his own recipe. Schiller’s main ingredient? Holmenkol, “for everything up to the last overlay.” That, of course, is top secret.