Eco Bath Muscle and Joint salt soak provides a soothing experience through a remedial blend of Epsom salt and healing essential oils.  Made with lemongrass, peppermint, eucalyptus and black pepper essential oils Gently relieves the stress of tired or aching muscles and joints Contains a naturally high magnesium content  Chemical composition: Magnesium Sulfate Heptahydrate MgSO4 · 7H2O Direction to use: Recommended use 250g. Add to warm running bath water for a wonderfully soothing & relaxing bath.