Accumulation of fog on rear side of front glass of cars

[Lafaso870]

Dear all,
Accumulation of fog on rear side of front glass of cars is a problem especially while driving through rains.
Can a simple mechanism/equipment be thought of to wipe off the fog?

[ImanCarrot]

Had a similar problem with my motorbike helmet visor. My breath would condense on the inside of the visor making it hard to see.

Easy solution- I got a drop of washing up detergent and rubbed it onto the surface (just one drop) 'till it dried in.

No more fog.

Should work with cars too.

[mezalick]

Shaving cream,
Try it on your bathroom mirror, if you have one

[Dougal]

I use lemon pledge furniture polish. On car windscreens (inside and out), on ski googles, mirrors and eye glasses.

However, hot air blowing on the inside of the glass will prevent fogging and running the AC in your car will too. You need to reduce the humidity on the inside which is acheived by running the air conditioning along with the heater, raising the temperature of the glass by using vents which blow directly onto the glass is necessary to clear fog quickly.

I spent three years living in a place with over 3 metres of rainfall per year. I kept the car air conditioning on whenever driving to keep the car interior as dry as possible.

[underthetire]

Yea, it's called the defroster. If you have a Japanese car, turn on the air conditioner with the defrost. Most other cars turn it on automatically. The air conditioner sucks the moisture out of the air and blows dry hot air with the defrost.