GtechniqG5 Water Repellent Coating for Glass and Perspex - Maximum Water Repellency; Extremely Hydrophobic, Easy to Apply, 3 to 6 Months Durability; Keep Glass Cleaner for Longer (100 milliliters)

This simply exceeded my expectations. It's water repellency is as good as anything I've seen, and it keeps working well for about 6 months during the Northwest fall and winter. That's with my car sitting outside, uncovered, every day. I was expecting about 3 months under those conditions, but I didn't see any noticeable degredation for about 4 months, and then it drops off slowly.I've applied it on 2 cars and it's performed the same for both. I did a heavy decon on the glass and then applied per instructions, and I had no issues with how it applied or removed.I'm always looking for something better even if I've been happy with what I have, but with this stuff it's so cheap for how long it lasts and how many applications I think I can get out it (20 cars or so?) that I have no interest in looking for something different.

We had to put our own lid on it with a pour spout. It works very well keeping the windows on our boat clear with no spots.

Yep, water repelled.

I've been professionally detailing for over 6 years. Having tried a handful of glass protection/coatings, this is nothing to be in awe over, but it does serve its purpose well.Application Difficulty (8/10): This product was easy to apply as its similar to applying a liquid wax. Removing however, was a completely different story. The directions instruct you to remove it with a dry cloth. To remove streaks, I had to use a dry cloth followed up by a damp one to get the remaining product from the glass. Without the damp cloth, the glass was left streaky and hard to see through.Performance (6.5/10)- This product beads water efficiently, but it did not outperform other brands of glass coatings I have used. It also did not outlast other products I have used. I would compare its beading abilities to Rain-X, although it is a bit more durable.Overall Rating (5/10)- I don't mind this product for my personal vehicles as you get more applications per bottle than others, but as a professional, I wouldn't recommend it over other brands. The application process is too difficult for the performance in my opinion.

Have had it on for about a month and so far so good. Everything is easy to clean off and repels water well above 35 mph. It was a little time consuming to apply but well worth it. Only time will tell how long it will last. I hope at least 4-5 months minimum.

Easy application, can't wait till it rains.

Cleaned, polished and decontaminated the glass well before use. It left an oily film that was very hard to remove and made an oil slick look when it got wet. Actually had to stop on our trip and buy a strong cleaner to scrub this stuff off so I could see in the rain. If I applied it wrong, I’d sure like to know, I followed directions exactly.Next go around I’ll try the Cquartz.

Look, I've been looking for a great water repellent specifically for my vehicle that I very rarely have to even use my wipers....and many years ago there was a company that made one that did just that, so I guess I'm kinda spoiled when it comes to what I expect out of a water repellent.A couple of weeks ago, we had the downpour I was looking to test this, after had applied it to my vehicle about 7 days before this happened, and it worked okay.I did have to use my wipers, so out of the last 5 products I have bought over the years, this has been the one that replaces all of them, and I gave them to my neighbors, because they didn't want to spend time, effort or money that I did. To each there own.For now, at least this year, I think I've found one of the best ones out there. This one. And maybe, like other companies, their looking to improve upon it.I just wanted to give my honest review in both using this item, and many others in the past to compare it to....Maybe I'll give it 4 stars instead of 3 in just reflecting on the other ones I've wasted my money on.Remember to WEAR GLOVES, and if you use a sponge applicator for this, washing it won't take the chemicals out. Just toss the applicator in the trash, or you will find it disintegrates and will make a mess. Just FYI.