We recommend washing your Zegho after every ride, using just water and mild soap. First wash your hands, then use clean fingers to gently rub off sweat and dirt. Rinse well, shake off the water. Only now do you use the microfibre cloth to dry and polish your Zegho. DO NOT use a circular motion to wipe the lenses. Instead, wipe off water droplets using a horizontal, unidirectional movement from center to edge.