How many years past expiration date is epson salts safe to wash your body?

Epsom salts (magnesium sulfate) do not expire in the traditional sense, as they don't spoil or become harmful over time. However, they may lose potency or effectiveness after the expiration date, which is typically around 2-3 years. If the salts are stored properly in a cool, dry place and show no signs of contamination or clumping, they are generally considered safe to use for bathing even after the expiration date. Always check for any unusual odors or changes in appearance before use.