Forget expensive window cleaners: A one-ingredient kitchen trick leaves glass spotless

Forget expensive window cleaners; a common kitchen staple can achieve a spotless shine. Editors at The Kitchn tested a simple trick recommended by a reader, using only cornstarch and warm water to leave windows gleaming without a single streak.

Traditional window cleaning often leaves behind frustrating smudges and residue. Dust, pollen, and grease accumulate daily, making it difficult for standard cleaners to achieve a truly clear finish. The tested method involves mixing about three-quarters of a teaspoon of cornstarch into a liter of warm water.

According to the reader's grandmother's long-used technique, the cornstarch acts as a mild abrasive, effectively lifting stubborn dirt without scratching the glass. After applying the solution with a damp cloth in circular motions, the glass needs only a final wipe with a dry microfiber cloth. This inexpensive and readily available solution proved surprisingly effective, even on areas with persistent grime, offering a cost-efficient alternative to commercial products.

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The mixture I mix well, and then I wipe the window with two cloths.