Best Glass Coating: Reviewed and Ranked

A glass coating bonds a hydrophobic layer to your windshield so rain beads off at highway speed and you can use the wipers less. The good silica-based formulas last six months to a year, well past what a basic rain repellent gives you. Apply before a long road-trip season or when your wipers are skipping across dry-spot residue. Decontaminate the glass first with a clay bar and isopropyl wipe-down — pair with new wiper blades, since old ones can scratch through the coating. Want something quicker and cheaper to apply? A rain repellent gives you the same beading for less prep, just less durability.

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