How Does Topical Magnesium Work?

Oral magnesium must pass through the digestive system, a process that limits absorption and can cause laxative effects at higher doses. Topical magnesium bypasses this entirely.

When applied to the skin, magnesium chloride is absorbed transdermally, allowing it to reach muscles and connective tissue directly. This makes topical application particularly effective for localized muscle soreness, tension, and cramps.

It’s important to note that our magnesium chloride meets United States Pharmacopeia purity standards — the same standards applied to pharmaceutical ingredients — ensuring it is free from heavy metals and contaminants. This is especially important for daily topical use.

The Science Behind Magnesium

The science behind magnesium is both extensive and striking. Recently, research has linked low magnesium levels to a number of chronic diseases, including:

• Alzheimer’s disease
• Insulin resistance
• Type 2 diabetes
• Hypertension
• Cardiovascular disease

A 2025 review published in PubMed identifies magnesium as a critical component in hundreds of cellular processes, including:

• Regulating energy metabolism
• Regulating nerve and muscle functions
• Supporting heart and bone health
• Boosting immune defense
• Promoting psychological well-being

The research on magnesium’s day-to-day benefits is equally compelling. Randomized, controlled studies found that magnesium supplementation:

• Supports falling asleep quickly
• Significantly improves length of sleep
• Significantly improves sleep quality
• Improves melatonin and cortisol levels

For stress and anxiety, a systematic review of clinical trials determined that supplemental magnesium can be beneficial in the management of mild anxiety and stress, particularly in those with low magnesium levels prior to supplementation.

Here are additional studies on magnesium you may find interesting and informative:

Bioavailability of Magnesium (Sept. 2025)
Bioavailability of Magnesium and Potassium Salts Used as Potential Substitutes for Sodium Chloride in Human Nutrition — A Review – PMC

Cellular Magnesium (Nov. 2014)
Role of Cellular Magnesium in Human Diseases – PMC

Topical Application of Magnesium (April 2017)
Effect of transdermal magnesium cream on serum and urinary magnesium levels in humans: A pilot study – PubMed

Single Blind Study (July 2017)
Myth or Reality—Transdermal Magnesium? – PMC

RTC Double Blind Study (Jun. 2025)
No Effect of Topical Application of a Commercial Magnesium Gel on Exercise Recovery in Active Individuals – PubMed

Impact of Transdermal Magnesium (Sept. 2010)
A_pilot_study_to_determine_the_impact_of_transdermal_magnesium_treatment_on_serum_levels_and_whole_body_CaMg_ratios.pdf

Magnesium in the Body (June 2023)
Physiology of a Forgotten Electrolyte—Magnesium Disorders – PMC
Studies Confirming Absorption of Topical Magnesium – The Heart Of Tradition

Skin Benefits ( Aug. 2025)
Magnesium Could Have Major Benefits for Skin, Dermatologists Say

Notes:

Magnesium (Mg) is classified as a macronutrient, trace mineral, and cofactor in enzymatic reactions.

Mg plays a pivotal role in various physiological processes, including energy metabolism, muscle contraction, protein synthesis, and DNA synthesis. It acts as a cofactor for more than 300 enzymatic reactions, facilitating the conversion of adenosine triphosphate (ATP) to adenosine diphosphate (ADP) for energy production. Moreover, Mg is essential for the proper functioning of ion channels, particularly calcium channels, influencing nerve transmission and muscle relaxation. (Fatima G, Dzupina A, B Alhmadi H, et al. Magnesium Matters: A Comprehensive Review of Its Vital Role in Health and Diseases. Cureus. 2024;16(10):e71392. Published 2024 Oct 13. doi:10.7759/cureus.71392)

Mg deficiencies often stem from inadequate dietary intake, a prevalent issue worldwide. Studies consistently demonstrate that dietary Mg intake falls short of recommended levels, with a significant proportion of individuals consuming Mg below the recommended daily allowance (RDA). Western diets, characterized by high consumption of refined foods and low intake of Mg-rich whole grains and green vegetables, contribute to this shortfall. Processing and cooking methods further deplete the Mg content in food, exacerbating the problem. Additionally, factors such as pathogenic gut microbiota, phytic acid in certain foods, and the use of pesticides like glyphosate can interfere with Mg absorption, compounding the issue of deficiency. The consequences of Mg deficiency are multifaceted and can manifest as muscle cramps, fatigue, weakness, cardiovascular abnormalities, and increased risk of chronic diseases such as CVD, type 2 diabetes, and osteoporosis.

Diuretic-induced hypomagnesemia often accompanies hypokalemia, with mg correction being necessary for K balance. Therefore, assessing Mg levels in patients with hypokalemia is advisable. Moreover, several medications commonly used in the elderly, such as antacids, H2 blockers, proton pump inhibitors, antihistamines, antibiotics, antiepileptic drugs, and antivirals, among others, may contribute to mg deficits.