Alum (aluminum salts)

Alum refers to a group of chemical compounds, typically aluminum salts, that are widely used for various applications. Commonly seen in water purification, food processing, and cosmetics, alum helps to clarify water and act as a preservative. It's also used in baking powder as a leavening agent. In nature, alum can be found in crystalline form, often appearing as a transparent or white substance. While generally safe for consumption in small amounts, it’s important to use it appropriately, as excessive intake can lead to health issues.