Magnesium is the fourth most abundant mineral in the human body and involved in over 300 enzymatic reactions. It is also one of the most commonly deficient minerals in populations eating modern Western diets — estimates suggest that between 50 and 80 percent of the population in developed countries has suboptimal magnesium intake. This widespread deficiency has wide-ranging health consequences, including specific effects on skin health that are rarely discussed in conventional dermatology but well understood in nutritional medicine.
Magnesium's Roles Relevant to Skin
Magnesium participates in skin health through multiple pathways. It is required for DNA repair enzymes that maintain the integrity of skin cell DNA against UV-induced damage. It modulates inflammatory responses through its role as a calcium antagonist — magnesium deficiency allows excessive calcium entry into cells that drives pro-inflammatory signaling relevant to all inflammatory skin conditions. It is required for glutathione synthesis — the body's master antioxidant that protects skin cells from oxidative damage. And it plays a role in the maintenance of the skin barrier through its involvement in ceramide synthesis pathways.
Magnesium Deficiency and Skin
Research on magnesium deficiency and skin has found connections to eczema, psoriasis, and accelerated skin aging. The inflammatory mechanism is the most documented: magnesium deficiency increases circulating inflammatory markers including C-reactive protein, IL-6, and TNF-alpha — the same markers that drive the most common chronic inflammatory skin conditions.
Barbara O'Neill discusses magnesium extensively in her teachings on mineral deficiency and chronic disease, noting that magnesium deficiency is implicated in virtually every chronic condition she addresses. For skin specifically, her recommendation to ensure adequate magnesium intake — through diet and transdermal supplementation — addresses the inflammatory root of many skin conditions that topical treatment alone cannot resolve.
Transdermal Magnesium Absorption
One of the most practically relevant aspects of magnesium for skin care is transdermal absorption — the ability to absorb magnesium through skin from external sources. Magnesium chloride in solution (magnesium oil) applied to skin is absorbed transdermally, bypassing the digestive system limitations that make oral magnesium supplementation partially ineffective for some people.
Epsom salt baths (magnesium sulfate in hot water) are the most widely practiced form of transdermal magnesium supplementation, recommended by naturopathic practitioners and endorsed by Barbara O'Neill for both magnesium supplementation and muscle recovery benefits. Research on the magnitude of transdermal magnesium absorption is ongoing, but the widespread clinical observation of Epsom salt bath benefits in naturopathic practice has substantial experiential support.
Dietary Magnesium for Skin
Dietary sources of magnesium that align with Dr. Sebi's alkaline food list include dark leafy greens (spinach, Swiss chard, kale), nuts and seeds (pumpkin seeds are particularly high), legumes, and sea vegetables including sea moss. Prioritizing these foods provides the magnesium substrate for the inflammatory regulation and antioxidant synthesis that skin health requires.
The complete holistic approach: dietary magnesium from whole foods, Epsom salt baths or topical magnesium oil for transdermal supplementation, and natural soap without synthetic chemical burden for the topical layer. Each element addressing a different dimension of the same system.
Beyond Clean, Beyond Ordinary.