While glass cleaners are available in the market, you can make your own at home. There are several ways to make this compound. One of the most common methods involves using a lemon to scrub the surface. Simply cut a lemon in half and rub it over the affected area. Rinse off with cold water and dry thoroughly.
Another way to get rid of hard water stains on glass is to use lemon dishwashing soap. Lemon dishwashing soap can break down calcium in hard water, which causes a streaky appearance. If you cannot find the right glass cleaner, you can also use baking soda. This natural ingredient is easy to find in your kitchen and can help you get rid of the stains on glass. Use it carefully as the chemicals in lemon dishwashing soap are toxic.
For the strongest solution, use Winsol Crystal Clear 550, which is designed to remove mineral, chemical, and stage 1 alkaline deposits. This product can also smoke float glass, so be sure to wear protective clothing when using this product. If you do not have any vinegar at home, you can also try ProTool 3-Star Barrier on the affected glass surface. This solution is more acidic than lemon juice. If this does not work, you can apply another layer of glass cleaner.