Yes. Magnesium chloride, the form in Dr. Doug's Magnesium Balm, penetrates the skin. Peer reviewed imaging shows magnesium ions crossing the outer skin layer, with hair follicles acting as fast pathways, and a human pilot study measured a rise in blood magnesium after two weeks of topical use.
The short answer, and why the internet keeps arguing about it
Search this question and you get a fight. One camp says your skin is a barrier, not a sponge, and nothing gets through. The other camp is selling you a spray and swears it fixes everything. Both are answering the wrong question, and that is why the answer feels so muddy.
Here is the honest version, from a neurologist who formulates with this mineral every day. Magnesium chloride does penetrate the skin. That part is settled by imaging studies. What is genuinely debated is something narrower: whether rubbing magnesium on your skin can raise your whole body's magnesium enough to correct a true deficiency. Those are two different questions, and the skeptics win arguments by quietly swapping one for the other.
"The skeptics are answering a question nobody asked. The real question is not whether topical magnesium floods your bloodstream. It is whether it gets into your skin where you put it. The imaging is clear that it does. As a neurologist, I formulated with magnesium chloride because it is the form the skin actually takes up."
- Dr. Doug Strobel, MD
What the peer reviewed science actually shows
The skin is not a sealed wall. In 2016, researchers imaged human skin under a multiphoton microscope while magnesium ions were applied to the surface (Chandrasekaran et al., Magnesium Research). They watched the ions move into and through the outer skin layer, the stratum corneum. Penetration went up with higher concentration and longer contact time, and they found the route: hair follicles. When the team physically plugged the follicles, magnesium uptake dropped sharply.
A human study measured it in blood. In 2017, a pilot study in PLoS ONE (Kass et al.) had people use a magnesium cream daily for two weeks. The cream group showed an 8.54% rise in serum magnesium and a 9.1% rise in urinary magnesium, while the placebo group barely moved or went negative. Small and early, and the authors said so, but a real, placebo controlled signal pointing the same way as the imaging.
And the skeptic paper? We read it too. The most quoted critical review is Gröber et al., 2017, in Nutrients, "Myth or Reality, Transdermal Magnesium?" It concludes the evidence is not strong enough to recommend topical magnesium to fix a body wide deficiency. We agree with that specific claim, and we do not make it. The review is skeptical about using skin as a substitute for a supplement, not about whether magnesium enters the skin. Separate those two questions and the contradiction dissolves.
Why the form of magnesium matters more than anyone tells you
"Magnesium" on a label is shorthand. It is always bound to something else, and that partner changes everything on skin. The two you meet most are magnesium sulfate (Epsom salt) and magnesium chloride. Chloride is more soluble and releases its magnesium ions more readily (noted in a 2025 JAAD Reviews summary), so more free magnesium is available to move inward. That is why the penetration research uses magnesium chloride, and why Dr. Doug's Magnesium Balm is built on chloride, not Epsom salt. If an Epsom bath ever left you feeling like nothing happened, this is a large part of why.
What we claim, and what we do not
What we stand behind: magnesium chloride penetrates the skin and delivers magnesium to the skin and tissue right where you apply it. What we will not say: that a balm cures anything, treats a condition, replaces your doctor, or fixes a deficiency. What people actually reach for it for is the ritual. You massage it into tired legs or shoulders at night, and our peppermint and lavender essential oils turn rubbing it in into a wind down cue. That is a sensory experience, not a medical treatment, and it is why the nightly ritual crowd keeps coming back.
How to use it so it can work
Absorption is technique, not just chemistry. More contact time helps, so a leave-on balm beats a spray that flashes off or a bath you climb out of. Follicles are the doorways, and warm skin after a shower helps. And a little goes a long way: a few passes over the target muscle, massaged fully in. If it ever feels greasy, you used too much.
The bottom line
Does topical magnesium absorb through the skin? Yes, magnesium chloride does, and the imaging and a human pilot study back it. The real debate is narrower than the headlines: whether a topical can replace a supplement for whole body deficiency, and on that point we do not claim what the science has not shown. What we do claim is what a balm is honestly for. Dr. Doug's Magnesium Balm, 2.5oz, is $42.00, made with eight simple ingredients, and rated 4.9 stars across 2,600+ verified reviews.
Frequently asked questions
How long does it take magnesium to absorb through the skin?
Penetration is gradual and depends on contact time. Research showed more magnesium moving in with longer contact, which is why a leave-on balm beats a quick spray or a bath you step out of. Massage it in and leave it on, especially on warm skin after a shower.
What type of magnesium is best absorbed through the skin?
Magnesium chloride. It is more soluble than magnesium sulfate (Epsom salt) and releases its magnesium ions more readily, so more is available to penetrate. Dr. Doug's Magnesium Balm is built on magnesium chloride for exactly this reason.
Is magnesium chloride better than Epsom salt for the skin?
For getting magnesium into the skin, yes. Epsom salt is relaxing in a bath, but it is less soluble and gives magnesium far less contact time than a balm you leave on. Chloride is the form used in the skin penetration studies.
Can you absorb too much magnesium through your skin?
Topical use delivers magnesium locally, and healthy kidneys clear excess efficiently, so everyday topical use is generally well tolerated. Use a small amount. If you have kidney issues or are pregnant, check with your doctor first. General education, not medical advice.
Why does magnesium make my skin tingle?
A light tingle is common, especially on freshly shaved or very dry skin, and it usually fades with regular use. Dr. Doug's Balm buffers magnesium chloride in nourishing oils and shea butter to keep it gentle. If the tingle is strong, use a little less and apply after a shower.
Sources
- Chandrasekaran NC, et al. Permeation of topically applied Magnesium ions through human skin is facilitated by hair follicles. Magnesium Research, 2016;29(2):35-42. Link
- Kass L, et al. Effect of transdermal magnesium cream on serum and urinary magnesium levels in humans: A pilot study. PLoS ONE, 2017;12(4):e0174817. Link
- Gröber U, et al. Myth or Reality, Transdermal Magnesium? Nutrients, 2017;9(8):813. Link
This article is for general education and is not medical advice. Dr. Doug's Magnesium Balm is a cosmetic product, not a drug, and is not intended to treat, cure, or prevent any condition.
Shop Dr. Doug's Magnesium Balm, formulated by Dr. Doug Strobel, MD, a board-certified neurologist.