Directions Directions for Use: Briefly soak skin in warm, sudsy water. dry thoroughly. Gently draw the shaver across the corn or callus in a shaving motion to remove thin layers of dead skin. Directions for Changing Blades: Place rubber disk (included) on a flat, dry surface. Grasp shaver by handle, place blade carrier portion of the shaver on the rubber disk. While applying light pressure, slide backwards until the bald carrier locks into place.