My right headlight lenses is fogged up and ugly. The other one looks so much better. It ruining the look of the whole car.

Now my question is this, If I replace my whole lense with a new one, will it end up being fogged again? Or is there a way to clean it?

If I buy a new one and it ends up being fogged up then theres no point.

It seems like this happens to other 5th gen owners too. One side fogs up and other is fine.