Epsom salt crystallized after diluted in water

Just an evidence what happen to the Epsom Salt (magnesium sulfate) after diluted in water - as you can see it crystallized an interesting evidence this stuff could contribute to crystal making probably. It is claimed to have many health benefits to the body although it is not scientifically proven. However just like other basic based material the Epsom Salt does making skin softer when applied. The extreme sport trainers in the UFC is actually using the Epsom Salt to relieve muscle pain and reduce weight by absorbing into skin using warm water.