I’m sure by now, from our previous blogs and product information, you’re well aware of how important magnesium is for the body. But do you know the difference between the various magnesium compounds available? Not all forms of magnesium work the same way—each has its own level of potency, absorption rate, and purpose. Understanding these differences helps you choose the right form for your needs and avoid unwanted side effects.
Magnesium Lactate, Magnesium Malate, Magnesium Citrate, and Magnesium Glycinate
These forms are commonly found in dietary supplements and are designed for internal use. Each supports different functions—such as energy production, muscle recovery, or digestive health—depending on the formulation. However, they have little to no benefit when used transdermally (through the skin). So, while they’re great in your supplement routine, they won’t do much for you in the bath—no need to turn your protein shake into a soak!
Magnesium Oxide and Magnesium Taurate
These two forms are typically used for specific therapeutic purposes. Magnesium Oxide is often prescribed for digestive issues, heartburn, or constipation, while Magnesium Taurate supports cardiovascular health and may help regulate blood pressure. Because of their potency and targeted effects, these forms should only be taken under medical supervision and are not suitable for topical or cosmetic use.
Magnesium Chloride and Magnesium Sulfate
Now we’re talking about the forms most beneficial for topical application. Both are widely used to ease muscle tension, joint pain, and general fatigue. Magnesium Chloride dissolves quickly in water, allowing for faster absorption through the skin and efficient delivery to soft tissues for rapid relief. Magnesium Sulfate—better known as Epsom salt—is a long-time favourite for relaxation and muscle recovery. While both are effective, they differ in how they interact with the skin and body.
Let’s break it down further:
Magnesium Chloride is highly water-soluble and absorbs quickly, helping balance other minerals during uptake. It hydrates the skin, supports barrier integrity, and is gentle enough for regular use in creams and sprays.
Epsom Salt (Magnesium Sulfate), while excellent for baths, doesn’t hydrate the skin as effectively and can leave a slightly dry texture or film when applied directly.
Magnesium Chloride is also less likely to cause irritation or disrupt the skin’s natural oils, making it ideal for sensitive skin and topical formulations.
Because of its high bioavailability, Magnesium Chloride is absorbed efficiently and excreted naturally once the body’s needs are met, without overloading the kidneys.
Chemically, Magnesium Chloride is closer to the body’s natural mineral composition, meaning it integrates more harmoniously into the skin, muscles, and joints—like a welcomed guest rather than an uninvited one at the dinner table.
Magnesium plays a vital role in muscle and joint function by supporting calcium regulation, reducing inflammation, and preventing muscle cramps or spasms. Studies have shown that adequate magnesium levels improve muscle recovery, flexibility, and endurance while reducing soreness and stiffness (de Baaij et al., 2015; Zeng et al., 2021). Beyond its physical benefits, magnesium also has a calming effect on the nervous system. It helps regulate neurotransmitters such as serotonin and GABA, which are essential for mood stability and emotional balance. Research indicates that magnesium supplementation can reduce symptoms of anxiety, stress, and depression, promoting a sense of calm and overall well-being (Boyle et al., 2017; Tarleton & Littenberg, 2020).
Finally, it’s important to note that while topical magnesium can provide fast relief and support, it shouldn’t be your only source if you’re deficient. Products like Rem & Recover deliver a beneficial dose of magnesium (and sodium, unlike many other brands), but sprays and creams alone can’t fully restore internal magnesium balance. For optimal results, magnesium should also be introduced through diet and supplements—always under the guidance of your GP or a qualified dietitian after appropriate testing.
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References
-de Baaij, J. H. F., Hoenderop, J. G. J., & Bindels, R. J. M. (2015). Magnesium in man: Implications for health and disease. Physiological Reviews, 95(1), 1–46.
-Zeng, C., Li, H., Wei, J., Yang, T., Deng, Z. H., Yang, Y., & Lei, G. H. (2021). Association between dietary magnesium intake and risk of knee osteoarthritis. Frontiers in Nutrition, 8, 642.
-Boyle, N. B., Lawton, C., & Dye, L. (2017). The effects of magnesium supplementation on subjective anxiety and stress—A systematic review. Nutrients, 9(5), 429.
-Tarleton, E. K., & Littenberg, B. (2020). Magnesium intake and depression in adults. Nutrients, 12(8), 2359.