A highly concentrated solution of magnesium chloride flakes dissolved in water is commonly referred to as magnesium brine or magnesium oil. The preparation is an aqueous solution that gets its “oily” texture from the high mineral saturation. Creating this brine at home allows for control over the quality of the ingredients and the final concentration. This guide provides a process for safely and effectively preparing your own magnesium brine solution.
Essential Ingredients and Supplies
The quality of the raw materials directly influences the purity and longevity of the final brine. The most important component is magnesium chloride, which should be sourced in flake form. Look for flakes labeled as high purity or USP grade, as these meet rigorous standards for quality. These flakes typically contain about 46% magnesium chloride by weight.
The solvent used should be high-quality water. Distilled water is strongly recommended because it lacks the minerals and microbes found in tap water that could introduce contaminants and shorten the shelf life. Alternatively, tap water can be used if it is boiled first and allowed to cool, which sterilizes the water. You will also need a non-reactive vessel, such as a glass measuring cup or bowl, for mixing, and measuring cups to ensure an accurate ratio.
Step-by-Step Mixing Instructions
The most common and effective mixture ratio involves equal parts of magnesium chloride flakes and water by volume (1:1 ratio). This creates a highly concentrated, saturated solution. For example, combine one cup of magnesium flakes with one cup of water. Using a slightly lower concentration, such as 1 part flakes to 1.5 parts water, may be preferable for those with sensitive skin.
Begin by gently heating the measured amount of water to a low simmer or brief boil. While heating is not strictly necessary, the warmer temperature significantly increases the rate at which the salt crystals dissolve. Once the water is heated, remove it from the heat source and pour it into your glass mixing container.
Slowly add the measured magnesium chloride flakes to the hot water. Stir the mixture constantly using a non-metallic utensil, such as a wooden or silicone spoon, until the flakes are fully dissolved. This process should only take a minute or two, and the resulting liquid should be completely clear with no visible sediment.
Allow the concentrated solution to cool completely to room temperature before storage. Transferring hot liquid to a plastic container, especially one with a spray mechanism, can damage the plastic and compromise the solution’s integrity. Once cooled, use a funnel to pour the finished brine into its final storage container.
Proper Storage and Shelf Life
To maintain the potency and purity of the homemade magnesium brine, transfer the finished solution to an airtight container, preferably dark glass. Dark glass minimizes light exposure, which can potentially degrade the solution over time.
If the brine is intended for use as a spray, a glass bottle equipped with a spray atomizer is ideal for both storage and application. The container should be kept in a cool, dark place away from direct sunlight and temperature extremes, such as a cupboard or pantry. Storing the brine correctly helps maximize its longevity.
When prepared with distilled or pre-boiled water and stored under optimal conditions, the homemade magnesium brine typically has a shelf life of several months, often lasting up to six months or longer. Before each use, inspect the solution for any signs of spoilage. Indications that the brine may be compromised include cloudiness, discoloration, or the presence of mold or bacterial growth, which means the solution should be discarded.