Rain Repellant - Windshield Additive | Windshield Washer Liquid

Wipers help with rain — but only up to a point. At highway speeds, wipers fight against the water sheeting across the windshield, leaving streaks, smears, and reduced visibility right when you need to see clearly. Rain Repellent Windshield Additive is the small product that fixes that — added to the washer fluid reservoir, it spreads a hydrophobic layer across the windshield every time you spray, making rain bead up and roll off the glass on its own.

The additive contains hydrophobic compounds that bond to the glass surface as the washer fluid evaporates. The bonded layer changes the way water interacts with the windshield — instead of spreading flat and streaking, the water forms beads that roll off cleanly. Once you reach a certain driving speed, the airflow over the windshield is enough to push the beads off without needing the wipers at all.

• Continuous application. Every wash refreshes the hydrophobic layer — no need to remember to apply a separate treatment.
• Even coverage. The washer jets spray across the windshield uniformly, so the treatment lands where it's needed.
• Convenience. One bottle in the reservoir handles weeks of automatic treatment.
• Wipers do the rest. The wiper blades spread the treatment as they sweep — no manual application required.

1. Locate the windshield washer fluid reservoir under the hood.
2. Pour Rain Repellent into the reservoir as a top-up — refer to the label for the exact ratio with your existing washer fluid.
3. Refill the rest of the reservoir with regular washer fluid.
4. Use the windshield wash function several times to spread the treatment evenly across the glass.
5. The effect builds up over the first few washes and persists between refills.

• Rain beads up on the windshield instead of flowing flat across it.
• At highway speeds, water flies off without much help from the wipers.
• Light drizzle is often visible enough without using the wipers at all.
• Bug splatter and bird droppings are easier to wipe off afterwards.
• The effect lasts weeks to months depending on driving conditions.

Tip: Each bottle lasts about 4 refills of a standard washer fluid reservoir — cost-effective per use. The treatment also helps in winter conditions by preventing water from freezing into a sheet on the windshield.