What Is Magnesium Oil, and How Is It Different From a Supplement?
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The name is a little misleading. Magnesium oil isn't oil at all. It's a solution of magnesium chloride and water that feels slightly slick on the skin, which is likely where the name came from.
Still Earth's version keeps that idea simple: purified water and magnesium chloride, nothing else. No fragrance, no fillers, no preservatives standing in for a shelf life the formula doesn't need.
So how is it different from a supplement?
A magnesium supplement is swallowed, digested, and processed through the gut. A magnesium spray is applied to the skin and, at least in theory, bypasses digestion entirely. That's the main practical difference: one goes through your stomach, one doesn't.
Worth saying plainly: the science on how much magnesium actually reaches the bloodstream through skin is still debated among researchers. What we can say with confidence is that the spray delivers magnesium directly to the skin's surface, which is why people use it as a topical addition to their routine, not a replacement for a balanced diet or a doctor's guidance on supplementation.
Why people reach for it anyway
For a lot of people, it's less about the debate and more about the ritual. A few sprays on tired feet after a long day. A moment before bed that doesn't involve swallowing another pill. Something simple, close to the skin, easy to build into an evening.
If you're already taking a magnesium supplement, a topical spray isn't a competitor. Many people use both: the supplement for consistency, the spray for the moments a capsule can't quite reach, like a sore shoulder after a workout or the last few minutes before sleep.
What's actually in the bottle
Still Earth's spray is made from magnesium chloride flakes dissolved in purified water, delivering roughly 16mg of elemental magnesium per spray. Small-batch, made in California, in a bottle designed to disappear into the routine rather than interrupt it.