Fill your sink with hot water and 2 cups of white vinegar.
Place the glass items in the sink to soak for approximately 20 minutes. If the items are too large for the sink, spray them with undiluted vinegar, and wait for 20 minutes.
Wash the glasses using a soft, moist cloth and a drop or two of liquid dish soap.
Rinse the glasses, and dry them with a lint-free cloth.
Moisten a cloth with lemon juice. Lemon juice is an acidic cleaner that can dissolve hard water stains.
Dip a cloth into salt. Salt acts as a mild abrasive cleaner.
Scrub away the hard water stains with the cloth.
Rinse the glasses, and dry them with a lint-free cloth.