Mix up 1 desert spoon of cloudy ammonia and a desert spoon full of sugar soap in about a litre of warm water.
Soak a paper toweling in the mixture and put it on the area to be removed.
Let it soak on the old window tint for 1 hour, keep it wet by spraying the left over mixture onto the paper towel.
Pick up corner, and peel of in one piece.
wash the window in the left over mixture.
Simply isn't it?
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