Numerous car glass cleaners on the market can help to remove the tar and nicotine from your windshield. But you can also remove it with the homemade vinegar spray by adding water, baking soda, and vinegar. And before applying this mixture over your windshield or non-porous surfaces. Squirt some warm water with dish soap added to loosen up the dirt and to make vinegar work effectively to remove any residue of tar or buildup nicotine.