This Mustard Bath Aid is an original recipe. The mustard seed bath mix is a wonderful, natural way to ease those troublesome aches and pains. Mustard baths are an English folk remedy that has long been used to treat colds and flu, ease aching muscles and even help the body to sweat out toxins and fevers. Sprinkle a little in your bath for a gentle detoxing and healing soak. The natural Health Connection bath soak also contains eucalyptus oil, which is great for congestion and chesty coughs. It also contains magnesium sulfate (Epsom salt), which eases sore muscles and softens the skin.