5600SXT 48,000 Grain Metered Water Softener

The Fleck 5600SXT is the best-selling 48,000-grain metered ion-exchange water softener, built around the digital valve that has become the category's gold standard. It is the "fix the source" answer for dense Asian hair abroad: filtering at the shower helps, but only a softener actually removes the hardness minerals that harder-than-home water uses to leave thick hair dull, stiff and unresponsive to every product. Because it is metered, it regenerates on demand — using salt and water only when you draw, not on a wasteful timer. It suits whole-home hard-water removal in two-to-four-bathroom homes and is the end-state solution the Hard Water education page points to. It needs a plumbing install, so it isn't for renters or non-plumbing setups.