The purchase is worth it with the correct application using a microfiber cloth and patience, it does exactly what it promises. The windows become hydrophobic and are more difficult to get dirty for a considerable period of time. Perfect product, I have also used it on the windows (frames) of my house (exposed to rain) with excellent results!

It probably dirties the windows instead of cleaning them. It requires a lot of scrubbing to remove it from the windows. I didn't see any hydrophobic result, unless I'm doing something terribly wrong, which I don't think I am.

It's amazing!

From the ease of application, but mainly because it doesn't let rainwater stick to the windshield.

Since I started using it, I stopped using the second or third setting on the wipers. The fluid creates a hydrophobic film on the glass, the water forms small droplets and rolls upwards (especially the faster you go, as the air pushes it away) or downwards when the car is stationary.

Car glass is not Ajax, if the windshield is dirty, the fluid will not remove the dirt or debris, but it will lock them onto the glass and reduce visibility and/or annoy you if there's a spot right in front of your eyes.

Lastly, it requires attention during application. It doesn't need kitchen paper, but a microfiber cloth. Also, don't apply too much on the cloth because it only needs a little to create a thin film. If you apply too much, it may not remove the water properly.