Water softening is a technique that serves the removal of the ions that cause the water to be hard, in most cases calcium and magnesium ions. Irons ions may be removed during the softening (It is recommended to have an iron filter before a water softener).
Having softer water means cleaner and shinier silverware, glassware, mirrors, tiles, cars or any plumbing fixtures. Softer and cleaner skin, smooth hair. Reduced soap curd makes cleaning easier and reduces housework.