SEAL OFF SHAVING CUTS: This natural block of potassium crystal acts as an astringent to seal off shaving cuts after a traditional wet shave, meaning there’s no need for blotches of tissue. SOOTHES THE SKIN: Traditional alum blocks feature qualities that help to soothe the skin post shave. Simply run under clean cold water and glide across your skin to reduce shaving irritation. TRAVEL SIZE: The Bluebeards Revenge Alum Block is travel size, making it a great addition to any wash bag or barbershop.