KAl (SO₄)₂ x 12H₂O
It crystallize In regular crystal system. Though it easily soluble in water, in nature it forms crystals and crusts. It can be easily created in lab conditions by hydrothermal method. It is colourless, but it easily gets coloured. When put into direct sunlight it slowly looses water from it’s composition and turns white.
It is also used in cosmetics for bleeding blocking and to accelerate healing