WHAT IS ALUM The alum block (stone) is a 100% natural dried crystal mineral of (potassium) alum. It is the original antiseptic aftershave which contains mineral salts that were originally used by the Egyptians more than 4,000 thousand years ago for its healing and antiseptic molecules inside the block. DIRECTION FOR USE: Used after a shave which is rubbed over the wet face, closing up any nicks or scratches due to the astringent properties. WHERE ELSE CAN THE ALUM STONE BE USED: 'Spots and Pimples': Apply directly to the affected area last thing at night to control and cure a spotty complexion. An Alum Block can be used as an astringent for oily complexions. 'Antiperspirant / Deodorant / Excess Sweating': An Alum Block is ideal for those who wish to use a natural antiperspirant. Simply apply the Alum Block to the underarms for a totally reliable, natural, antiperspirant. Highly effective in controlling excess sweating.