Magnesium "oil" (also referred to as transdermal magnesium, magnesium hexahydrate) is a colloquial misnomer for a concentrated solution of magnesium chloride in water. It is oily only in the sense that it feels oily to the touch, but unlike a true oil it mixes freely with water—as it must, being an aqueous solution. Magnesium oil is supposed to be applied to the skin as an alternative to taking a magnesium supplement by mouth, although it is ineffective and scientifically unsupported due to lack of any convincing data that magnesium is absorbed in significant amounts through the skin.
References
- Criscuolo, Giulia (October 2011). "Transdermal Magnesium". The South African Journal of Natural Medicine. No. 76. Archived from the original on January 15, 2015. Retrieved 22 January 2015.
- Werner, T.; Weidner, M.; Vormann, J. (2017). "Transdermal magnesium—myth or reality?". Journal of the Australian Traditional-Medicine Society. 23 (4). Retrieved 16 May 2022.
- Gröber U, Werner T, Vormann J, Kisters K (July 2017). "Myth or Reality-Transdermal Magnesium?". Nutrients. 9 (8): 813. doi:10.3390/nu9080813. PMC 5579607. PMID 28788060.
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