During winter, many households in cold climates experience condensation on windows, which can lead to mold and moisture damage. A simple yet effective solution involves placing a bowl of salt water on the windowsill. This method works due to salt's hygroscopic properties, allowing it to absorb moisture from the surrounding air. Scientific studies, including a 2020 paper from the University of Chinese Academy of Sciences, confirm that sodium and potassium salts can effectively absorb water vapor under varying humidity levels. Homeowners across the U.S. and U.K. have reported success with this technique, noting less condensation on their windows. However, while this method can help, it is not a complete solution. Proper ventilation and insulation are essential to manage indoor humidity effectively. Salt should be replaced when it becomes saturated to maintain its effectiveness. Overall, this low-cost winter hack offers a practical way to reduce window condensation, backed by both scientific research and real-world observations.