Alum Block offered by The Art of Shaving and eShave. The fourth step in purchasing quality mens shaving products is to obtain an alum block. Alum blocks take care of nicks and cuts instantly, act as an antiseptic, stops razor burn and also give your face that silky smooth feeling.

Directions:
For nicks and cuts: Run the alum block under hot water and place over cut for 1-2 seconds. For antiseptic: Run the alum block under cold water and rub over all areas of the face where you have just shaved.
I just got this in the mail from a vendor, timely.