. Calgon 3en1, used at each washing protects the vital parts of your washing machine so that it lasts longer! Thanks to their rapid dissolution, the active agents contained in the frost act immediately on all the vital parts of your machine. They offer optimal anti -lime protection and promote the evacuation of dirt and fiber and laundry residues that cause bad odors, your machine remains clean over the washing and works at the best of its performance. With Calgon 3en1 gel, only the minimum amount of detergent recommended in regions where water is necessary. So you can save up to 35 % detergent.