If you’ve ever climbed into your car on a cold or damp morning and found the windows fogged up, the seats feeling slightly clammy, or the interior smelling a little musty, you may have heard of a surprisingly simple trick: putting a glass of salt inside the car.
At first, it sounds almost too easy to be useful.
Salt? In a car?
But there is a little science behind the idea. Salt can help with moisture in certain circumstances, although it’s important to understand what it can—and cannot—do.
So before you fill a glass and leave it on the dashboard, let’s look at how this hack works, when it might help, how to use it safely, and when you need something more effective.
Why Put Salt in a Car?
The main idea behind this hack is moisture control.
A car’s interior can collect moisture from wet shoes, umbrellas, clothing, snow, rain, condensation, spilled drinks, and even normal breathing when several people are inside.
