Do you know?
Oil from asphalt, car wax, and other sources can stick to your windshield and form an oily film.
When that film is exposed to sunlight or heat, it can bake onto the glass and turn into a hardened coating.
Once that happens, regular glass cleaners or windshield washer fluid won't be enough to remove it.
Many drivers now use rain protection or glass treatment products on their windshields,
but if the surface isn't perfectly smooth, those products won't work as intended.
In fact, old or patchy glass coatings can actually reduce visibility and become part of the problem.
Are you applying rain protection directly without prepping the glass?
Surface preparation is essential for proper performance.
【 Key Features of Silicone-Based Rain Protection 】
While it doesn't match the durability of fluorine-based coatings, it's much easier to apply.
Reapplication is also simpler, with less surface prep required compared fluorine types.
In addition to wiper wear, rain and oil can also cause deterioration.
The slightly uneven surface of the silicone coating tends to trap dirt and grime.
Using your wipers in the rain can actually make visibility worse!
✕ : If you apply additional layers without proper surface prep
・When rain protection is applied over dirt or oil film, the silicone coating traps the contamination underneath, creating an uneven surface. It doesn't just blur your view — it can cause your wipers to squeak and stutter.
・The silicone coating and dirt layer overlap. Leads to blurry vision and louder, skipping wipers, An uneven silicone layer wears out faster over time..
〇 : When reapplied with proper surface preparation,
・Use Kiirobin to remove dirt and residue. Thorough cleaning is ideal, but removing surface grime is the most important step.
With the surface clean, new silicone blends seamlessly with the existing layer.
・The layers blend seamlessly, restoring a smooth and uniform coating. A smooth surface allows the silicone coating to deliver optimal performance.
【Benefits of Fluorine-Based Glass Coatings】
Fluorine coatings create a surface that repels everything, making them extremely durable.
But because of that, applying another layer on top can be difficult.
・Fluorine creates a long-lasting protective layer, but wipers can still wear it down over time.
・A fluorine layer keeps dirt and oil at bay — but in worn areas, that effect fades.
Using your wipers in the rain can actually make visibility worse!
✕ : If you apply additional layers without proper surface prep
・If dirt remains, the fluorine coating won't go on evenly — and the new layer can trap that dirt underneath. ( ※1 )
Old fluorine left on the surface repels new fluorine coating. ( ※2 )
・Applying fluorine over dirt leads to an uneven, short-lived coating. Plus, since new fluorine can't bond with old, layering doesn't improve performance.
〇 : When reapplied with proper surface preparation,
・Kiirobin removes worn-out fluorine layers and resets the surface, ensuring a smooth bond between the glass and the coating.
・By resetting the surface with Kiirobin, the glass and the new fluorine coating bond uniformly, allowing the fluorine water repellent to perform at its full potential.
Thinking about protecting your windshield?
For the best results, pair your rain repellent
with Kiirobin to prep the surface for a clean, long-lasting bond.
Did you know? Kiirobin was first released over 45 years ago.
The original product was developed by former company president Takeshi Hirose, after he was involved in a car accident on a rainy day. Determined to prevent poor visibility from causing more accidents, he set out to create a product that would improve visibility for drivers in wet conditions.
In 1976, Kiirobin was officially recommended by the Japan Traffic Safety Association, which helped the product gain nationwide recognition.
Since then, Kiirobin has continued to envolve — leading to the creatioin of Kiirobin Gold, an improved formula designed to remove oil film faster and more easily than ever before.
In recent years, Kiirobin Gold has earned widespread praise, including multiple wins in the Minna no Car Life (Minkara) Parts of the Year Awards in the glass care category.
In 2020, it was even inducted into the Hall of Fame, reflecting its long-standing reputation and performance.
