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Alum deodorant stick Small crystals are forming on the bottom

Alum, or better, 'potassium alum' (KAl(SO4)2.12H2O), can be easily bought in any drugstore. I got mine as a mineral deodorant, found in the supermarket. I just needed to get the alum stick off its container and powder it.

I followed the method shown on Crystalverse.

And so I made my saturated solution, filtered it off, let it cool down and sprinkled some alum powder in it. After a while (a lot of) small crystals are forming at the bottom. Now it has to stand for 2 days...

I placed 50ml of the solution in a flat container and did the rest of the solution in a jar where I will hang a seed crystal as soon as a nice one has formed.