Put a Glass of Salt in Your Car — The Reason Might Surprise You

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How Interior Fog Develops

Fog forms when moisture in the air settles on a cooler surface. Inside a vehicle, warm and humid cabin air can come into contact with cold windows, causing tiny droplets to appear across the glass.

The moisture may enter the car in several ordinary ways. Wet shoes, damp clothing, rain-covered umbrellas, snow, and water continue reading …