The best way to remove hard water stains from your shower doors is to do so using regular household items such as white vinegar and baking soda.
Secondly, how do you clean a badly stained shower screen?
Keeping this in view, how do hotels keep glass shower doors clean?
Pour a mix of one part white vinegar and three parts warm distilled water into a spray bottle and spray it onto the glass. Rinse it with warm water after a few minutes and wipe it off with a cloth, newspaper, or paper towel. With Dish Soap: Combine dish soap and white vinegar, keeping a 1:1 ratio.