Tip: The difficult thing about removing tint is that most film is made up of two layers of tinted polyester. When you try to peel the film off the glass, the top layer will most likely pull right off leaving the second layer behind. The second layer will not peel off, it will just flake and tear like a price tag.

Step 1:
To over come separation between layers you must soften the adhesive so that both layers peel at the same time. This is very important, if you peel the just the top layer, you may as well just use razor blades as there is no way to peel the second layer off without picking at it for a few hours. You MUST try to peel both layers at once.

NOTE: You are more than likely to damage one or more of your defroster lines, when this happens, the cut line will not work anymore. Some cars have radio antennas mounted alongside the defrosters made of the same material. If you damage these, your radio antenna will not work! Be very careful! Taking it to a tint shop to be done greatly increases the odds of saving your lines, but even a tint shop can always promise to save your lines, sometimes the film is just to far gone.

Step 2:
First, clear the window of any obstructions, like the brake light, speaker covers etc.

Step 3:
Next cut open the garbage bag so that it will be big enough to cover the entire window. Spray some water on the outside of the back window and the lay plastic bag over the glass. Cut away excess plastic so that it is now roughly the same shape as the glass.

Step 4:
Next, lay a tarp over the rear deck and seat, spray ammonia liberally on the inside of the back window. (Ammonia is very strong, I suggest you hold your breath during this step) and cover ammonia soaked tint with the plastic bag so that it won't evaporate.

Step 5:
Park the car with the rear window facing the sun for about a hour or more. The film should then be ready to peel.

Step 6:
When you are ready to begin peeling, leave the plastic in place so the ammonia won't dry. Get the peeling started with a razor blade in a corner where there are no defroster lines. Try to peel the film off in one piece. If the ammonia dries as you peel, the glue will then get hard again, so spray a bit of ammonia on the area as you peel.

Step 7:
Once the film is peeled you will need to scrub the adhesive off with ammonia and fine 0000 steel wool. Mop up the scrubbed areas with paper towels before it dries. Finish up with window cleaner and paper towels.