A little DIY home chemistry goes a long way in removing water spots and hard water stains.
Glass is something that you want to keep clean all of the time. Hard water, water that is rich with minerals, is what most people use along with soap to clean glass. But the excess minerals stay on the glass after you wash off the water, creating water spots along with soap scum. Many of the ways you might have heard of to clean this scum off don’t work as you have been told. But there are 2 simple ways to solve the problem of soap stains or water spots on your windows or your glass. You can use vinegar. By mixing together vinegar and dish washing detergent, you will be able to clean all of the soap scum off of the glass you are working on, by spraying the soap scum with the vinegar solution that you created. After you apply the solution, you will let it sit and mix into the stain for 15 to 20 minutes. Then scrub the vinegar solution on the glass with a soft, brittle brush. After all of this, rinse the glass off completely with hot water, then wipe the area clean to remove any remaining traces of grime and filth.
Another way to remove soap scum from glass is to use baking soda. This is a deodorizing abrasive that will help you remove soap scum from whatever glassware that you need to clean. To clean the glass, you must mix the baking soda and dish washing detergent to form a paste. Dip a soft bristle brush into the solution you created, apply it to the soap scum, and let it sit for the same amount of time as the vinegar solution was allowed to. After this time has passed, take a soft bristle brush and scrub the solution until the soap scum has disappeared completely, and then rinse the glass off with hot water. After you have done this, wipe the area clean to remove any and all traces of filth that could linger.
For very tough soap scum that refuses to come off, there is even a way to remove that from the glass. When you combine vinegar and baking soda, they form a solution called carbonic acid. What should happen is that it will begin fizzing, which is just the CO2 escaping. Once this fizzing stops, take a sponge and scoop up some of the mixture of vinegar and baking soda. Wipe this paste on the glass that has the soap scum trying to be removed. Let it sit for once again the same time the vinegar and the baking soda was allowed to remain there, and once the time has come to pass, use a window scrubber and water to thoroughly clean off the paste mixture, and check to see if the soap scum is completely gone.
To prevent the soap scum from returning you might want to install a water softener along with a RO unit. This will greatly reduce spots on your glass, is it a “cure-all” no, but it will be much better. Hard water is a culprit in leaving deposits along with soap scum.