You want your glassware to be holiday-perfect and not the least bit dull or cloudy. Rid the results caused by hard-water deposits by pouring 2 tablespoons of white vinegar into your dishwasher’s rinse cycle cup. Use along with your regular detergent. The acetic vinegar will dissolve stubborn deposits. Another tip within a tip: air-dry your dishes in the dishwasher. Heat can also cause the deposits that make your glasses cloudy.