Used regularly, the De'Longhi EcoDecalk descaler liquid significantly reduces the likelihood of premature breakdown from scale build-up, increases the energy efficiency, and improves the coffee flavor and crema. Our ecological descaler is made with lactic acid and is suitable for all coffee/espresso machines. The liquid is easier and quicker to use than coffee machine descaling tablets and helps keep your machine running smoothly so you are always able to enjoy your favorite beverages.