Alum or fitkari is a naturally occurring salt usually made of potassium alum. Often available in crystal form, the colourless or white substance is a hit among fans of natural deodorants.

“Growing crystals means they can take a break ... kids are tasked with taking 100 grams of powdered non-toxic aluminum potassium sulfate (alum), dissolving the alum in water, and then being ...

It was the first time judging was back at UB since 2023. Altogether, there were over 170 crystals, each made from aluminum potassium sulfate (alum), a nontoxic compound used in water purification. “It ...

Alum or fitkari is a naturally found salt that is made of potassium alum and is often available in the market in a crystal form. Alum is a colourless white substance that is found majorly in ...