Thread: Differences in Alum

I received for Christmas two blocks of alum. One shavex made in India and one bloc osma made in France. The one made in France looks like frozen glacier water from a stream on a hillside while the one from India looks like someone took armpit sweat and fossilized it. Honestly putting the side by side makes me a tad worried about using it. My question is should I be worried or is all potassium alum the same???

Yes both are potassium alum not other types. They are both single ingredient potassium alum blocks so why the difference in appearance?





Bloc osma France right. Shavex India India India left