Back

How Epsom Salt Baths Can Help You

June 26, 2025

Perhaps you’ve pulled a muscle at the gym or perhaps your arthritis is acting up. Besides waiting it out, is there anything you can do?

An age-old method used for hundreds of years may offer you a solution. Epsom salt baths have been around for a while, and a simple soak in one may help you feel better.

Epsom salt isn’t the kind of salt that you sprinkle on your food. It’s a type of salt that gets its name from a place in England where it’s been found in natural springs. Nowadays, it’s found everywhere from local grocers to natural food stores. Buying a box of the stuff will only cost you a few dollars.

Epsom salt is different from the kind of bath crystals that are often laced with oils, colors, and perfumes. Essentially, Epsom salt is mainly comprised of magnesium and sulfate. When you soak in an Epsom salt bath, these components become absorbed into your skin.

Stress Relief and Mental Health Benefits

Epsom salt baths are often praised for their ability to help with stress relief and mental health. Magnesium plays a crucial role in regulating the nervous system, and a soak in a warm bath can increase feelings of relaxation.Many people believe that magnesium absorption during a bath boosts serotonin levels, which can improve mood and reduce feelings of anxiety and stress.

While there’s limited direct evidence supporting the claim that magnesium is absorbed effectively through the skin, taking time to relax in a warm bath can have significant mental health benefits.

The combination of warmth, quiet, and self-care can help reduce anxiety, promote better sleep, and ease the mind after a long day. If you're feeling overwhelmed, a soothing Epsom salt bath may offer both physical and mental relaxation, providing a simple way to unwind.

Here are some of the uses that Epsom salt can be used as a treatment for:

           
  • Bruises and sprains
  •        
  • Insomnia
  •        
  • Psoriasis
  •        
  • Soreness from diarrhea during chemotherapy
  •        
  • Tired, swollen feet
  •        
  • Arthritis pain and swelling
  •        
  • Sunburn pain and redness
  •        
  • Ingrown toenails
  •        
  • Fibromyalgia

You should seek out your physician about recommendations and to avoid any adverse reactions.

Scientific Evidence & Skepticism

Despite Epsom salt’s long-standing reputation as a home remedy, the scientific evidence supporting its benefits is limited. Many claims, such as the ability to absorb magnesium through the skin, are based on anecdotal experiences rather than robust scientific studies.

Some small studies suggest that magnesium may help reduce inflammation and muscle soreness, but there's little direct proof that soaking in an Epsom salt bath delivers these benefits.

It’s important to note that while magnesium is essential for muscle and nerve function, topical absorption through the skin remains debated. Most experts agree that Epsom salt baths are safe, but any therapeutic effects likely come from the warm water itself rather than the salt.

In summary, while many people swear by Epsom salt baths for relaxation and minor relief, it's worth acknowledging the gap between personal experience and scientific validation.

How to take an Epsom Salt bath

The water should be comfortably warm, not hot, to avoid overly drying your skin. Add Epsom salt under running water to help it to dissolve. For a standard-sized tub, usually use one to two cups or the amount as recommended by your doctor.Sit in the bath for around 40 minutes in order to give enough time for your body to absorb the minerals and to eject the toxins. Now relax.

What Happens if You Put Too Much Epsom Salt in a Bath?

Adding too much Epsom salt to your bath can result in uncomfortable side effects. A higher concentration of magnesium sulfate can make the bathwater feel unusually slippery, which increases the likelihood of accidents.

Slipping while entering or exiting the bath could lead to injury, particularly in a bathroom setting where surfaces are hard and unforgiving.

Moreover, the excess magnesium from the salt may cause skin irritation. Overly concentrated Epsom salt baths can dry out the skin, leaving it feeling tight or itchy. For those with sensitive skin, this effect might be even more pronounced, resulting in discomfort instead of relaxation.

In rare cases, high amounts of Epsom salt can lead to magnesium absorption through the skin, especially if used frequently or in large quantities. This could cause side effects such as dizziness or a drop in blood pressure, particularly for those with underlying conditions.

To avoid this, it’s crucial to stick to the recommended amount of 1 to 2 cups per bath. This ensures you get the benefits without risking discomfort or health issues.

Epsom Salt Bath Side Effects

While Epsom salt baths are generally safe, there are a few side effects you should be aware of, especially if used improperly. Skin irritation is the most common issue, particularly for those with sensitive skin. The salt can cause dryness or a stinging sensation, especially if you have open cuts or abrasions.

For individuals with pre-existing skin conditions, such as eczema or psoriasis, using too much Epsom salt may exacerbate their symptoms. It’s always a good idea to test a small patch of skin before soaking in a full bath to avoid any surprises.

Another potential side effect is dehydration. If ingested for constipation or used in excessive amounts in baths, Epsom salt can cause diarrhea, leading to dehydration. This is especially important to consider if you’re using the salt both internally and externally.

If you feel light-headed or experience diarrhea after use, it’s time to lower your intake and consult a healthcare professional.

Lastly, people with kidney disease or other chronic conditions should use caution. Excess magnesium can strain the kidneys, so it's vital to consult a doctor before adding Epsom salt baths to your routine, particularly if you have any underlying health issues.

How Many Epsom Salt Baths Can I Take in a Week?

When it comes to the frequency of Epsom salt baths, moderation is key. For most people, 2 to 3 Epsom salt baths per week is generally considered safe and effective for muscle relaxation and stress relief.

This frequency allows your skin to benefit from the magnesium absorption without the risk of over-drying or irritation.

If you're using Epsom salt baths to manage a specific condition, such as arthritis or fibromyalgia, you may consider taking baths more frequently. However, it’s important to listen to your body. If you notice any signs of irritation, such as dry or flaky skin, consider reducing the number of baths.

For individuals with pre-existing health conditions, such as cardiovascular issues or low blood pressure, it’s wise to consult a doctor before increasing the frequency of Epsom salt baths. While they are generally safe, overuse could lead to imbalances in your magnesium levels or dehydration, especially if you're soaking for long periods.

Leo M. Tonkin
Salt Chamber CEO

Leo Tonkin, with a decade of deep expertise in salt therapy, initiated SALT Chamber, a leading entity in the domain of salt therapy products and decor. As the inaugural Chairman of the Salt Therapy Association and Chair of the Respiratory Wellness Initiative from the Global Wellness Institute, he has played a pivotal role in broadening the accessibility and recognition of salt therapy globally. His commitment to developing advanced technology and educating the public on the benefits of salt therapy has solidified his position as a key figure in the industry, enhancing its credibility and trustworthiness.