Natural Living Magnesium Chloride Brine From the Ancient Zechstein Seabed Super Concentrated Formula Optimal Health First Choice Discussion: Relax, restore, and renew your body and senses. Specially formulated with Magnesium Chloride Brine from the Ancient Zechstein Seabed in the Netherlands to help soften and moisturize your skin. The Magnesium Chloride Lavender Bath Oil Soak bubbles in the tub or lathers in the shower for a refreshing experience!