Shave brushes are necessary if using a shaving cream or soap. They are used to build a soft, cushion of lather. Creating a good lather on a hydrated face is essential to having a comfortable, consistent shave. Warm, hydrated skin and hair allows the blade to cut through hair easily and glide across the skin-minimizing ingrown hairs and razor burn. This brush has a big knot, is solidly built and massive so it fits in even the most mannish of hands.