Magnesium Chloride Brine. From the Ancient Zechstein Seabed. Pure Magnesium Oil is a highly concentrated spray of pure magnesium chloride brine from Zechstein Seabed in the Netherlands- mined deep under the earth's surface. Nothing added and nothing removed, it can be used daily, is non-greasy and leaves no unpleasant odor. Provides approximately 66g of elemental magnesium for every 4 sprays or 560mg in a teaspoon. Can be used to detox armpits & as a natural deodorant. You can also find bulk magnesium flakes + smaller eco packaged flakes to make your own spray or use in a hot bath or foot soak.