Finish Detergent Booster is the solution for your hard water problems. Finish Booster with 5X Power Actions works with your dishwasher detergent for crystal clear dishes and an amazingly clean dishwasher every time - even in hard water. Our Finish Hard Water Detergent Booster™ takes dishwashing to another level. FINISH Ultra Hard Water Formula supercharges your detergent for clear dishes and a clean dishwasher every wash! Finish Booster works hard to remove: spots & residue, tough/bleachable stains (such as tea), and mineral build-up in your machine.