Wet block with cold water and gently rub all over the face after shaving to close the pores. The antiseptic properties are useful for minor nicks or abrasions caused while shaving. Can also be used as a pre-electric shave, or for preparing hair for a flat-top cut, or as a natural deodorant. Alum block is a reusable stone made from a homeostatic mineral, Alum, and the natural antiseptic, potassium. This stone of many virtues cleanses, tones, and primes skin during and after shaving. The Alum Block lasts up to a year with proper care, which includes leaving it out to dry completely after use. Do not leave it in water, as it will dissolve.