First use the coarse side to remove more severe callus and then the finer side to rub away hard, rough skin.
In order to prevent rough hard skin from building up again, use a moisturising product such as Scholl Velvet Smooth Essential Moisture Cream.
SAFETY DIRECTIONS
Keep out of reach of children.
If dropped onto a hard surface, the metal heads may become dislodged. The metal components may have sharp edges, so replace with care.