This can lead to corrosion.

Window fittings in no case should be wiped with chemicals. This can lead to corrosion.

To increase heat in the room, a translucent film is used, which is attached to the glass using bilateral construction adhesive tape. In this case, the film should be glued tight so that the cracks do not form. In addition, you can add additional glasses, but at the same time it is necessary to make sure that the frame and loops of additional load will withstand the frame.