🧂 Should you put a glass of salt in your car?
This is a popular car-life hack, particularly in cold or humid weather. The idea is that salt can attract some moisture from the air, potentially helping reduce interior condensation and fogging. Some automotive sources recommend trying a small container of salt for this purpose.
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Auto Repairs and Recovery
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However, the effect is limited. A glass of ordinary table salt isn’t a substitute for fixing excessive moisture inside the vehicle. If your windows constantly fog up, check for wet carpets, leaks, damp mats, blocked drains, or other sources of water.
If you want to try it
Put a small, stable container of salt somewhere it cannot tip over.
Don’t place it where it could interfere with driving, pedals, airbags, or controls.
Replace the salt when it becomes damp or clumped.
Never scatter salt around the car or put it on the windshield or painted surfaces. Salt can contribute to corrosion.
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Dr. Beasley’s
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A better way to prevent fogging
Use your car’s defroster with fresh-air ventilation and air conditioning, as appropriate for your vehicle. Clean, dry windows also fog less readily. If condensation is unusually heavy, look for the underlying moisture problem rather than relying on salt.
Bottom line: A small container of salt may absorb some moisture, but the viral claim that it will dramatically “dehumidify your car” or solve every fogging problem is overstated.
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Sources
