CARPRO Flyby Forte V4 - Professional Extreme Windshield & Glass Coating, Rain Shower Water Repellent & Glass Treatment, Semi-Permanent Last Up to 2 Years - 15mL

I used a DA polisher and compound to smooth out my windshield and the hydrophobicity on this product is incredible. I love this coating

Works great good sheeting of rain(as good as rain x) not sure on how long it will last only had it on a couple of days. I will update for winter driving and how it handles salt and sand on roads

after a lot of research I landed on this product line and spent several hundred on their chemicals. On this product the first issue is the expiration date, on the box it says 2022, but the production date is on the container which you cannot see until you break the seal. The date I have is March so being Nov. it's about half shelf life aged on day 1. Second issue is the directions, there are so many details left out which left me guessing. There are two applicators but it doesn't say which is for what, micro suede cloths but your not supposed to wipe off (I think), and it doesn't really state when you need to keep wiping, or for even approximately how long. It says two coats on windshield, but the way it describes it is confusing, and after all of this I ended up over applying on some of my glass and need to remove and reapply but don't have enough product. Third issue is that the chemical was crusted up in the bottle on the applicator tip and that crust kept clogging th tip and caused over saturating the pad because I would try to drop it out but needed to use pressure to push past the clog. Ended up using all of the cotton applicators, and wasted a lot of material. I would not recommend this product even if it works better than others because of these factors. On top of all of this you cannot return it because Amazon considers it Hazards so once you buy it you're on your own. You need to del with Carpro, who has no US contacts for customer service.

Same issue as others have reported - FlyBy bottle is maybe 1/4th full. I started at 1 star but changed to 3 stars because I saw an online video that said the quantity of liquid is correct even though the bottle seems mostly empty. I went ahead and used the product even though I wasn't sure if there was enough liquid to cover my windshield. Ultimately there was enough in the bottle for the recommended 3 coats, with a small amount left over. The instructions or the product description should reflect this so that Customer expectations are set.

CarPro FlyBy FORTE is a longer lasting version of Carpro FlyBy 30. The 15ml bottle was enough for me to coat all of the windows on two vehicles, one of which is a compact SUV. I was able to double coat the back windows and triple coat the windshield. The product is easy to apply. The clarity is excellent (no visible haze or color on the glass). I did have to take care to completely polish out water spots on one of the vehicles. The included CeriGlass polish did a good job of that. My only complaint was that the cotton application pads tended to wear through exposing the inner fibers. I live in the Northwest and it's been a very rainy year. On my Accord, rain will roll off at about 40 MPH. Below that speed wipers need to be used depending on how hard it's raining. I've not had the SUV out in strong rain yet. There is no stuttering from the wiper blades when they are use. It the product worth the price? It's pretty expensive for the performance of the result. So I believe that you will need to make your own decision on that. I'm giving the product 4 stars mostly because of the high price.

Love the hydrophobic properties , wish more product came in the bottle.

I followed a YouTube tutorial by a prominent car detailer to the letter. Included manual is incomplete and does not cover required steps. Despite the tutorial, product leaves severe streaks on glass surfaces and leaves vehicle unsafe to drive due to sun glare. Also, bottle contents were not sufficient for treatment of my car (Mazda CX-9).

Great hydrophobic resilience. Bugs much easier to wash off.