The best way to improve visibility in heavy rain is to keep your windshield clean, use high-quality wiper blades, and apply a water-repellent glass treatment. Premium wiper blades such as Rain-X Latitude®, Quantum®, or Silicone AdvantEdge®, combined with Rain-X Original Glass Water Repellent or Rain-X 2-in-1 Glass Cleaner & Water Repellent, help water bead and roll away from the windshield for clearer visibility.