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For best results surface should be cool to the touch and applied out of direct sunlight. Spray diluted product directly on surface to be cleaned. Using a Meguiar's Ultimate Wipe (M9910) folded into quarters, wipe clean. Turn towel frequently to ensure a clean side is being used.
When making your final wipe on the exterior glass, move the towel in a left to right motion; on the interior glass move the towel in a top to bottom motion. This will easily identify the side of the glass where any streaks mayhave occurred.