What’s The Difference Between Bath Salts And Epsom Salts?

What’s The Difference Between Bath Salts And Epsom Salts? What is the difference between Epsom salt and bath salts? Epsom salt contains nothing but the naturally occurring minerals magnesium and sulfate. While bath salts may contain other ingredients as part of a proprietary blend, Epsom salt itself does not. Can Bath Salt replace Epsom salt?