AlmaWin rinse aid ensures residue-free drying and optimal shine. The AlmaWin rinse aid eco-concentrate is, of course, completely biodegradable. If you have streaking on your dishes, the addition of AlmaWin Rinse Aid is set too high. If you have dripping or staining, the addition of AlmaWin Rinse Aid is set too low. If the dosage is correct, the water film runs off evenly. Please check the correct setting against the specifications of your dishwasher manufacturer.