A device is for treating a running-surface coating of a piece of winter sports equipment. The device includes a movement device for generating a relative movement between the device and the running-surface coating of the piece of winter sports equipment, an application device for applying a ski wax to the running-surface coating of the piece of winter sports equipment, a heating device for heating the ski wax applied to the running-surface coating of the piece of winter sports equipment to above a melting temperature of the ski wax, and a cooling device for actively cooling the ski wax melted by the heating device to below a solidification temperature of the ski wax.