Hard water stains appear as white, hazy spots on glass surfaces. This is due to a build-up of alkaline and other minerals in your water. While these stains are notoriously tough to remove, you can use both liquid and non-liquid cleaners to help get your glass back into sparkling condition. There are also several ways that you can prevent hard water stains from returning once you’ve successfully removed them.
Following are simple tips and tricks for water spot removal on the mirror:
Using Liquid Cleaners
Use an acidic cleaner for the best results. Because hard water stains are alkaline, it’s best to remove them with a powerful acid. Look for a cleaning product that contains either phosphoric, sulfuric, or hydrochloric acid, as these acids should be able to effectively break down the stains. Read the directions on the product’s label and apply the acid cleaner to the stained areas as instructed.
Mix salt and water
Combine salt and water and use the mixture to remove the mineral buildup. The salt acts as a scouring powder and can cut through the stain. Apply the mixture to the area and use a clean cloth to rub the stain in a circular motion. Rinse the glass thoroughly when finished to remove all saltwater residue.
Use white vinegar
Vinegar is an acid, which helps to loosen mineral deposits, and white vinegar is clear/colourless enough to not cause any staining. It’s also a natural liquid cleaner that isn’t toxic and won't potentially burn your eyes or lungs like other chemical cleaners
You can also prevent hard water stains by sealing or protecting your glass surfaces