The idea is that these particles can be absorbed through your skin, providing you with magnesium and sulfates — which serve important bodily functions.
People use it to ease health problems, such as muscle soreness and stress. It’s also affordable, easy to use, and harmless when used appropriately.
This article provides a comprehensive overview of Epsom salt, including its benefits, uses, and side effects.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
Magnesium Sulfate (Epsom Salt)
Never use a higher dose of magnesium sulfate than recommended on the package label, or as your doctor has directed. Using too much magnesium sulfate can cause serious, life-threatening side effects.
Summary Epsom salt dissolves in water and so can be added to baths and used as a cosmetic. However, there is no evidence that your body can absorb its minerals through the skin.
Some cases of magnesium overdose have been reported, in which people took too much Epsom salt. Symptoms include nausea, headache, lightheadedness, and flushed skin ( 2 , 10 ).