GtechniqG5 Water Repellent Coating for Glass and Perspex 100ml - Maximum Repellency, 3 to 6 Months Durability, Beads Water, Removes Contaminants - Perfect for Car Windows, Marine Glass

Everyone who loves cars must try this cosmetics. Ease to use, very effective,

Takes a bit of effort to use properly but well worth that effort.

I bought this stuff along with some of the G4 Glass Nano Polish Gtechniq G4 Glass Nano Polish 100ml.The G4 polish preps the glass by getting rid of any residues before applying the rain-repellent coating really well. So, if you're putting this onto an older car (or even if you're not!) I would recommend using G4 polish before applying the G3 Nano Sealant Gtechniq G3 ClearVision Glass Coat.The G3 sealant itself goes on really easily. I found a folded paper kitchen towel to be the best thing. You need to apply this product as thin as you can while still getting total coverage otherwise the buffing job is going to need a lot of elbow grease! Apply the product nice and thin, allow it to dry to a haze and buff off (I use a microfibre buffing cloth) and it produces a smear-free finish fairly easily. The G3 buffs to a smearless finish a LOT easier than other rain-repellent products, such as Rain-X, that I've used before. Those products are almost like trying to get petroleum jelly off the glass, G3 is nothing like that.On the road the product performs as expected. Above 35-40mph rain just blows off the glass (and the side-windows if you do those too). There really is hardly any need to use the wipers except at very low (maneuvering) speeds. Even in heavy rain the water just beads up and runs off the screen very nicely. Another plus point is that in the summer it's easier to wash the bug splats off the screen and, in the winter, the frost doesn't stick quite so hard to the screen saving vital minutes scraping the glass each morning.Not so good, although this can be said of any rain-repellent product, is if you do use the wipers in the rain you get a momentary 'hazing' effect of the water which can degrade visibility a little but not dangerously so. Also, as product protection breaks down the wipers clear the screen unevenly making it harder to see. Therefore, if you do use these products, it's really important to top up the protection to keep the coating even.In terms of longevity, the product protection lasts reasonably well - several months I'd say. But, the more you use the wipers the shorter that time will be. So, if there's a lot of dirty spray and salt about (sadly you need washers and wipers to get rid of dirty, gritty stuff still) you'll be topping up your protection every 4-8 weeks depending on the mileage you do.Overall this is one of the best rain-repellent products out there and I would certainly buy it again. It only comes in a dinky little bottle, but you use very, very little each time you treat the glass that I'm sure one bottle will last several years.

Very repellent and having put it on a few window pains in additional to my original requirement, even though I did no prep and used the leftovers on my cloth, 9 months on and that window still shows the repellent properties. Repellent on glass though may not be that useful as during the daytime, water beads on the glass can make it more difficult to see out (as the beads create bright spots) compared to a normal smear, but the same window at night then becomes far clearer than the smeary version. I think my bottle will last years give how little you need!

Ok

Really good product providing you give a good prep try not to do in direct sunlight leave it to dry for approximately 15 minutes and buff of I used a little bit of Gtechniq window cleaner to remove it looks amazing and rain just beeds of.

Seems to work well. Very small bottle and it’s really hard to buff off.

First car ever without a rear wiper and frankly it’s annoying. I’ve tried gtechiq g1 on the rear window but the aerodynamics of the car are too bloody good and the water just sits there. Followed instructions and after clay barring the window cleaned with gtechniq nano polish remove excess cleaned again with perfect glass then applied this stuff. Easier to use than g1 though half the quoted lifespan. Honestly after a month of driving in horrible weather the rain just falls away even at low speed. Going to apply it on the side windows and mirrors. Top recommend.