How Long Does Epsom Salt Expire?
Epsom salt, also known as magnesium sulfate, does not expire. It can last indefinitely if stored properly in a dry and airtight container. However, if it is exposed to moisture or air, it can clump and lose its efficacy over time. Therefore, it is recommended to store it in a tightly sealed container in a cool, dry location away from sunlight and moisture to ensure its longevity.