Alum is a crystal-like stone that is moistened with water and gently rubbed over the shaved area to act as an antiseptic and to combat a number of post-shaving related skin problems including razor bumps, razor burn and redness. It can also help to stop bleeding from small nicks and cuts.

Alum is also frequently used as a natural deodorant.

This is a 60g alum stick in a convenient twist-top plastic enclosure.