There's a world of difference between a guy who has grown a beard and another who just hasn't bothered to shave. Beards require regular grooming and regular maintenance. How much depends on the style of beard you have, but in general you'll need to use a razor daily for a clean line at the top and on the neck. When cleaning up the neck and edges, shave along the grain using warm water, not hot, and only go over an area once. "Be sure to keep the razor clean and change the blade every five shaves," says Dr. Peterkin. "And to preserve your blade (and skin) always shake out the blade to dry it to avoid rusting."