Diamond Crystal® Water Softener Salt is more than just salt - it's a solution that transforms the water in your home to make it better.  When used in your water softener, Diamond Crystal® removes hard minerals from your hard water, including iron, calcium, magnesium, and even barium.  After our water softener salt removes hard minerals, you have soft, bright towels to wrap around your family, shiny dishes that can be used even with your most critical guests, and longer pipe and appliance life.