Magnesium is having a bit of a moment.

Like vitamin C before it, magnesium has managed to be both an essential mineral that we all need to live and a trendy ingredient popping up in viral TikTok recipes . Now, it's in skin care.

"I never really thought of magnesium as something specific for skin because it's not just for skin," dermatologist Dr. Shasa Hu, cosmetic director of the skin of color division at the University of Miami Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, tells TODAY.com.

While magnesium can help maintain the function of your skin's protective barrier, Hu says, it's also necessary for many bodily functions, including muscular function, brain health, glucose metabolism and energy processing in your cells.

These days, you might see magnes

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