Window fogging is one of the daily inconveniences experienced and feared by motorists. In fact, demisting the windows is a time-consuming act for drivers, especially when they are in a rush in the morning to go to work or drop the kids off at school. Some of you think that the problem can be solved with a single gesture, passing the sleeve of the jacket or any other garment through the window to clean it. However, while it may appear clean and shiny, halos can form that are difficult to remove.
This is a safer and faster way to defog your car windows without damaging them.

Fog on car windows – Source: spm
The only known way for motorists to properly clean their windshield for safe driving is to turn on the vent and wait for the condensation to clear. Condensation invades the windshield and windows due to the difference in temperature between the outside and the inside. If you have the air conditioner on, just leave it on for a few minutes and aim it at the windshield and windows to defoam the glass and start over without wasting time.
If, on the other hand, you do not have air conditioning, things can get more complicated. First of all, you should use a suitable cloth, preferably microfiber, because compared to cotton, it works better and removes moisture more easily.
Next, you need to rub the entire surface, leaving the windows open, especially the ones in front. Then wait a few minutes.

Crystalline Silica – Source: spm
The causes of windshield fogging are varied, but interior humidity is the main cause of fogging. This is annoying because the fog hinders your ability to drive due to the lack of visibility. However, you can prevent this from happening.
If you want to counteract this problem without resorting to air conditioning or opening the windows, you can use very practical objects that are easily found in stores. These are car dehumidifiers, for example they are made of silica gel or any other mineral.
Place some directly on the board and wait for them to take effect. These bags absorb the moisture present in the vehicle and therefore solve the problem of condensation upstream.
If you don’t want to spend money, you can use a cloth bag, filled with crystalline silica or sodium chloride which is kitchen salt and it can do this very well too.
read also How to remove fog from car windows?