I give up. Hard water stains on shower doors. Can they be saved?




I have used vinegar to get the soap scum off and CLR soaked paper towels laid on the glass, but the hard water stains remain. Is there hope to clean the glass shower doors or do I have to break down and buy new ones?
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Use a cleaner for removing Calcium Deposits and Soap Scum.
I've read sometime on here that you can use WD-40 to keep it from sticking to the glass doors.