Alum is advised for people with oily skin. Alum is very good for eye abscess. So as to make this remedy, alum has to be heated in a little empty kadai. Until recently, alum proved to be an important player in the domain of after shave lotions. In technical provisions, alum is a particular chemical compound called aluminum potassium sulfate, also called potash alum. What’s more, potassium alum can function as a good aftershave.