Rain Repellant. ( Rain X Or Soft99 ) Available here. Rain repellents form a protective shield over the windscreen. By creating a hydrophobic layer, rain repellents allow water to naturally bead up and roll off the surface, rather staying on the windscreen and being smeared across by the wiper blades. This allows a clearer view of the road ahead, improving the visibility, and reducing the need for frequent wiper use, minimizing their wear and tear. Using a good rain repellent will enhance your driving experience and extend the lifetime of your wiper blades. We sell the best rain repellent brands: Rain X, Nextzett and Soft99. Shop Rain Repellent Ireland