How can I permanently remove hard water stains from glass?

tried all the Lime A Way, kaboom, shower power, over-the counter glass/window cleaners. The “fog” keeps reappearing after the glass dries.. HELP!

Grapes
on November 30th, -0001

the vinegar solution from above answer should work with lots of elbow grease too. then after shower doors are clean and clear apply Rain-x to it. the Rain-x is a water barrier used for car windshields. Works kinda like teflon and the water just rolls off. never have water spots again. must re apply atleast once a month tho. good luck.
StarGirl
on November 30th, -0001

Mix 50/50 warm water and white vinegar or any acid based Cleaner
NaughtyNinja
on November 30th, -0001

you can spend a lot of money and purchase products that are made for this or you can buy a box of Borax (found in the laundry section of your market and it’s very inexpensive) put a teasoon or more with warm water into the galss and let it soak…there are many uses for Borax..check them all out online..you’ll be amazed!
Cocktail
on November 30th, -0001

Try cleaning your windows with Electrosol diswashing deterdent make sure you use the tablets though
CheeseCake
on November 30th, -0001

lemon oil…. can buy it at WalMart….used it on my glass shower doors and it works beautifully and those stains were bad because I couldnt find anything that would work for quite awhile after buying this house

Aleš Lombergar