When it comes to household cleaning, everyone seems to have their own set of tricks and tips passed down through generations. My nana, a woman of wisdom and experience, has always had a knack for keeping her home spotless. Among her many cleaning secrets, there’s one hack she swears by for achieving the cleanest windows imaginable.
For years, I watched her effortlessly transform dull, streaky windows into crystal-clear panes that seemed to invite the sunshine in. The secret? A simple, unexpected ingredient that you probably already have in your pantry: cornstarch. This humble kitchen staple has proven to be a game-changer in the world of window cleaning.

1. The Secret Ingredient: Cornstarch
Cornstarch, often used as a thickening agent in cooking, is the star of Nana’s window cleaning solution. Its fine, powdery texture makes it an excellent abrasive that gently scrubs away dirt and grime without scratching the glass. To prepare the solution, you’ll need just a tablespoon of cornstarch mixed with a quart of warm water. This combination creates a slightly cloudy mixture that works wonders on glass surfaces.
Unlike commercial cleaners that can leave behind residues, cornstarch rinses away cleanly, ensuring that your windows are left spotless and streak-free. Its natural properties make it a safe and effective alternative to chemical-laden products, perfect for households with children or pets.
2. The Science Behind Cornstarch’s Cleaning Power
The effectiveness of cornstarch as a cleaning agent lies in its unique molecular structure. Cornstarch particles are incredibly small and have a slight abrasive quality, which allows them to lift and trap dirt particles. When dissolved in water, these particles create a suspension that can easily be wiped away, taking dirt and grime with it.
Moreover, cornstarch is a natural absorbent. It can soak up oils and moisture, which is why it’s often used in deodorants and dry shampoos. This absorbency is also what makes it so effective at removing smudges and fingerprints from glass surfaces, leaving them clear and shiny.
3. Nana’s Tried-and-True Recipe for Spotless Windows
Nana’s recipe for spotless windows is as simple as it is effective. Start by mixing one tablespoon of cornstarch with a quart of warm water in a spray bottle. Shake the bottle well to ensure the cornstarch is fully dissolved. For added cleaning power, you can also add a quarter cup of white vinegar and a few drops of your favorite essential oil for a pleasant scent.
Once your solution is ready, spray it generously onto the window surface. Use a microfiber cloth or a squeegee to wipe the solution away, working from top to bottom. The result is a sparkling clean window that lets in more light and enhances the overall appearance of your home.
4. Step-by-Step Guide to Mixing the Perfect Solution
To mix the perfect cornstarch cleaning solution, follow these steps:

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