08/05/2026
We've all been there—staring at a passive-aggressive email at 4:57 PM while our heart hammers against our ribs like we're being hunted by a saber-toothed tiger. Our bodies haven't really caught up to modern life. To our nervous system, a deadline and a predator feel exactly the same. This constant "on" button drains us of the very nutrients we need to stay calm, specifically magnesium.
At Flewd Stresscare, we started during the 2020 pandemic because we realized that the world didn't need another scented candle; it needed a legitimate way to refuel our bodies after stress wipes us out. Bathing in magnesium is one of the most effective ways to get that essential mineral back into our systems without dealing with the "bathroom emergencies" that often come with oral supplements.
This post covers why magnesium is the backbone of our health, the massive difference between types of bath salts, and how a 15-minute soak can support our mood, muscles, and sleep for days. We're gonna dive into the science of transdermal absorption and how we can use a simple bath to reclaim our calm.
Can't decide? You don't have to! Give all four soaks a try with the soak stan favorite, the Stresscare Sampler 12-pack.
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It’s not just a feeling; most of us are actually running low on magnesium. Research suggests that about 75% of us aren't meeting our daily requirements. This isn't because we're doing anything wrong—it's because the world has changed. Our soil is more depleted of minerals than it used to be, and our high-stress lifestyles act like a giant vacuum for magnesium.
Every time we feel stressed, our bodies dump magnesium into our blood to help regulate our heart rate and muscle function. Eventually, we pee it out. If we’re stressed every day, we’re essentially leaking the very mineral that helps us stay chill. It’s a bit of a suuuuuper annoying cycle. When we’re low on magnesium, we feel more stressed, which makes us lose more magnesium.
Magnesium is involved in over 300 biochemical reactions in our bodies. It helps our muscles relax, keeps our heart rhythm steady, supports our immune system, and helps our brain regulate the "off" switch. Without enough of it, we might notice muscle twitches, a general sense of "doom" or anxiety, and the kind of fatigue that a double espresso can’t fix.
When we talk about the benefits of bathing in magnesium, we're talking about transdermal absorption. This is just a fancy way of saying "through the skin."
For a long time, people thought the skin was a solid barrier that nothing could get through. We now know that's not true—just look at nicotine patches or hormone creams. Our skin is our largest organ, and it’s surprisingly good at taking in what we give it.
One of the biggest hurdles with magnesium is our digestive system. Many forms of magnesium are natural laxatives (looking at you, magnesium citrate). If we try to take enough orally to fix a major deficiency, we often end up with an upset stomach before our levels actually rise.
By bathing in magnesium, we bypass the digestive tract entirely. The minerals move through our skin and directly into our interstitial fluid (the fluid surrounding our cells) and then into our bloodstream. This means we can get higher doses of magnesium without the gastrointestinal drama.
Bioavailability is the measure of how much of a substance actually gets used by our bodies versus how much just passes through. Not all magnesium is created equal. Most "wellness" baths use Epsom salts, but there's a more effective way to soak.
If we’ve ever bought a bag of salts for a sore back, it was likely Epsom salt. While Epsom salt is fine, it’s not the gold standard for magnesium replenishment.
Epsom salt is magnesium sulfate. It’s been used for hundreds of years, and while it feels nice, the body doesn't absorb it particularly well through the skin. It’s also excreted by our kidneys quite quickly, meaning the benefits don't last very long.
Magnesium chloride—specifically magnesium chloride hexahydrate—is what we use at Flewd because it's the most bioavailable form for topical use. This form of magnesium is highly soluble, meaning it breaks down completely in water and finds its way into our pores much more efficiently than sulfate.
The Bottom Line: Magnesium chloride is easier for our bodies to "grab" and use. If we want a soak that actually moves the needle on our stress levels, chloride is the clear winner over sulfate.
Cortisol is our primary stress hormone. In small bursts, it’s helpful. It gets us out of bed and helps us focus. But when it stays high because we’re constantly grinding, it starts to wreck our sleep and our mood.
Bathing in magnesium helps regulate the HPA axis (the hypothalamus-pituitary-adrenal axis). This is our body’s central stress response system. Magnesium acts like a gatekeeper; it sits on our NMDA receptors in the brain and prevents them from being overstimulated by excitatory neurotransmitters.
When we soak, we’re essentially telling our nervous system that the "lion" has left the room. We can actually feel the shift from the sympathetic nervous system (fight or flight) to the parasympathetic nervous system (rest and digest).
We carry our stress in our bodies. For some of us, it’s a tight jaw. For others, it’s shoulders that are basically earrings.
When we work out or even just sit in a cramped desk chair all day, our muscles accumulate lactic acid and tension. Magnesium is a natural calcium blocker. In our muscles, calcium is what causes a contraction, and magnesium is what causes the relaxation. If we don't have enough magnesium, our muscles stay in a semi-contracted state. This is why we get cramps and that nagging tightness in our necks.
Bathing in magnesium has been shown to reduce markers of inflammation in the body. This is why many people with joint pain or chronic conditions find relief in a magnesium-rich bath. It’s not just the heat of the water; it’s the mineral working to soothe the tissues.
What to do next:
Sleep is usually the first thing to go when we're stressed. We lie in bed, exhausted, but our brains are doing laps around everything we forgot to do in 2014.
Magnesium plays a massive role in sleep by supporting GABA (gamma-aminobutyric acid) levels. GABA is an inhibitory neurotransmitter—its whole job is to quiet down the nervous system. It’s the brain’s natural Valium.
By increasing our magnesium levels through a bath, we support our brain’s ability to produce GABA. This doesn't just help us fall asleep; it helps us stay in the deeper, more restorative stages of sleep. This is why we created the Insomnia Ending Anti-Stress Bath Treatment, which combines magnesium with vitamins A and E to help us drift off without the morning grogginess of sleep meds.
Most people think of magnesium for muscles, but our skin health loves it too.
A study in the International Journal of Dermatology found that bathing in a magnesium-rich salt solution significantly improved skin barrier function and hydration. It helps our skin hold onto moisture and reduces redness.
Our skin barrier is what keeps the "bad stuff" out and the "good stuff" in. When we’re stressed, our skin barrier often weakens, leading to dryness, itching, or breakouts. Magnesium supports the lipids that hold our skin cells together.
While we don't believe in "detox" teas or fad diets, our skin does play a role in releasing waste products. Warm water opens our pores, and magnesium chloride encourages the skin to release impurities. It’s a looooong way from those "toxin-pulling" foot pads you see in late-night commercials, but it is a legitimate way to support our body's natural processes.
While a bag of plain magnesium flakes is great, we believe stress is more nuanced than that. Different types of stress require different nutritional support. That’s why we take magnesium chloride hexahydrate and pair it with targeted vitamins and nootropics (brain-boosting nutrients).
By combining these nutrients with the transdermal delivery of magnesium, we’re essentially giving our body a nutrient IV while we hang out in the tub.
To get the most out of the benefits of bathing in magnesium, there are a few "pro moves" we should follow.
We often want our baths to be boiling hot, but that can actually be counterproductive. Super hot water can cause our heart rate to spike and our skin to dry out. Aim for "warm and cozy"—about 101-103 degrees Fahrenheit. This is the sweet spot that allows our pores to open without putting our body back into a stress response.
It takes a few minutes for the minerals to dissolve and for our skin to start the absorption process. We recommend staying in for at least 15 minutes, but 20 to 30 is even better. It’s the perfect amount of time to listen to a podcast or just stare at the ceiling and breathe.
After a magnesium bath, we might feel a slight "film" or tingle on our skin. That’s the minerals doing their thing. Unless our skin is suuuuuper sensitive, try to just pat dry with a towel. This allows any remaining magnesium to continue absorbing as we transition to bed.
While one soak will definitely help us feel better in the moment, the real magic happens when we make it a routine. Magnesium levels build up over time. Using a soak 2–3 times a week helps keep our "mineral tank" full so we're better equipped to handle whatever life throws at us on Monday morning.
"We treat our bodies like they have infinite resources, but stress is a debt that eventually comes due. Magnesium is how we pay it back."
Bathing in magnesium is one of the few wellness practices that actually has the science to back it up. It’s not about "escaping" our problems; it’s about giving our bodies the tools they need to process stress so it doesn't get stuck in our tissues. Whether we're dealing with a frantic mind, a heavy mood, or just plain old physical exhaustion, replenishing our magnesium is a non-negotiable part of feeling human.
If we're ready to see what a targeted soak can do, we recommend starting with a bundle like the Stresscare Trio. It’s an easy way to see which formula our body craves most. Take 15 minutes, pour in a packet, and let the science of Flewd do the heavy lifting for us.
While both have their place, bathing in magnesium allows for higher absorption rates without the digestive side effects common with pills. Transdermal delivery bypasses the gut entirely, making it a faster and more comfortable way to replenish our levels during high-stress periods.
For the best results, we suggest how often should we use bath soaks to maintain consistent mineral levels. However, if we're going through a particularly stressful week or recovering from intense physical activity, a daily soak is perfectly safe and can provide much-needed relief.
Yes, magnesium baths are generally considered safe and even beneficial for children, particularly to support better sleep and relaxation. We always recommend using a half-dose for kids and ensuring the water isn't too hot, but it's a great way to help them wind down after a long day.
A slight tingling sensation is completely normal, especially if our magnesium deficiency signs are particularly low or if we have tiny abrasions on the skin. This usually subsides after a few minutes as our skin adjusts; however, if it becomes uncomfortable, we can simply add more water to the tub to dilute the concentration.
