ALUM CRYSTALS

Although alum is not an herb, it is still an important component of herbal medicine.
Alum is actually the aluminum potassium sulfate crystals that are collected and refined from alum stone or other aluminous ores.
The crystals are usually irregular in size and either colorless or yellow-white.
The crystals are ground down into a powder for use.
In vitro studies have shown that alum can fight infections caused by a variety of bacteria, including S. aureus, pneumococcus, salmonella and anthrax bacillus