Salt as a beauty product? You bet. It’s a perfect body scrub all on its own; mixed with water, it becomes a facial toner to reduce oiliness; with essential oils, a healing bath soak. As early as 500 BC, Hippocrates encouraged his patients to bathe in warm seawater for medicinal purposes. (Credit him for those thalassotherapy pools found at Canyon Ranch and other exclusive spas.) How does it work? Salt is loaded with minerals: Bromides relax muscles, magnesium calms the nervous system, calcium strengthens bones and nails, sodium boosts the immune system, and potassium maintains the proper fluid balances. No wonder it is called the spice of life!