ULTRAPURE Laboratories Epsom Salts infused with Lavender Essential Oil is an effective and natural way to relax and unwind after exercise or simply a busy day. Soaking in an Epsom Salt bath allows the Magnesium Sulphate ions from the salt to absorb through the skin which may help alleviate muscle soreness. Both Epsom Salt and Lavender Essential Oil naturally help the body to relax and promote restful sleep.