Epsom salt is a common household product that has been used for generations in baths, gardening, and other everyday applications. Despite its name, it isn’t table salt. Epsom salt is magnesium sulfate, a mineral compound made up of magnesium, sulfur, and oxygen.
Although many traditional uses are popular, some health claims about Epsom salt are stronger than the scientific evidence supports. Here are 10 practical ways people commonly use it—and what you should know before trying them.
1. Relax in a Warm Bath
Adding Epsom salt to a warm bath is one of its best-known uses.
A warm bath itself can help relax tired muscles and make you feel more comfortable after physical activity. While Epsom salt is often promoted as a source of magnesium absorbed through the skin, there isn’t strong evidence that soaking in it significantly raises the body’s magnesium levels.
The relaxing effect may come largely from the warm water and the bathing experience itself.
2. Create a Relaxing Bedtime Routine
A warm Epsom salt bath before bed can be part of a calming nighttime routine.
The combination of warm water, reduced stimulation, and relaxation may help some people prepare for sleep. However, Epsom salt shouldn’t be considered a proven treatment for insomnia.
If you regularly have trouble sleeping, addressing caffeine intake, screen use, stress, and sleep schedules may be more useful.
