Unless you're actively going for that caveman look, it's a good idea to keep your beard in good trim. Otherwise, good luck finding a decent loincloth and club these days. . . You will need a beard in need of trimming, a mirror, a pair of barber's scissors, a wide toothed beard comb, an electric beard trimmer with guard attachment, a razor and some water. If you are using the beard trimmer, you don't need the comb - just set the trimmer's guard attachment to cut the least amount of hair possible, then decrease the setting to remove more hair with each pass as desired.