Salt water can cleanse the aura or energy field. The energy field can be polluted by coming into contact with a sick or distressed person. Natural sea salt or rock salt is the best. Dissolve one cup of salt in a tub of water. Be careful that the water is not to be too hot. Soak for 15 minutes. One can also soak when there is emotional distress. Apple cider vinegar has a similar effect. Just pour one cup of apple cider vinegar into a tub of hot water will do.