Went on very easy. However, it would be nice for the website to indicate how much is needed for a windshield. I was doing a Sprinter van (windshield about 39 x 75 inches ) and I only got 2 coats out of the 15ml bottle. My advice is buy the larger bottle! Or two of the small ones.

I'll probably buy this again next time I need to do my glass, but there were some aspects about the experience that could be better. First, shipping (at least on the small bottles) seems to be really hard on them; I ordered one kit from amazon which arrived damaged (the seal on the protectant had broken and it all leaked into the box). After refunding that one I ordered a second from here on DI figuring they might take more care in shipping, and it also arrived damaged, but fortunately it was the seal on the residue remover that had broken and was empty in this case. So between two orders I managed to get one complete product.

On my 2008 Subaru outback, I was able to get 3 coats on the windshield, and one coat on the two front windows, and the driver side rear side windows, and about half the back glass before I ran out of product. Fortunately most of my glass still had some protection from the last time I put aquapel on it. I did wipe the damp applicator over the rest of the glass and it seems to have improved the repellency. Maybe I was just using too much the whole time. (It was also super windy so may have evaporated more quickly than in a more favorable application environment).

I would have preferred the applicator pads to be larger. They were a bit hard to hold on to especially as they got worn and started to loosen and fall apart.

So far the repellency seems great. It's been a week or two and I have only had a couple mild rains since then, but even the dew flies right off. Cleaning up the haze was also easier than with aquapel.

Amazed by the hydrophobic and longevity of this coating! It's been nine months on my personal daily driver and it's still going strong with no top-up products!