303 Touchless SiO2 Sealant, 32 oz | Water-activated SiO2 sealant for paint and glass with long-lasting protection.

I have used this stuff for about 2 years now and I am finally reviewing it. This stuff is amazing and works basically instantly. Just follow the instructions and you won't be disappointed. The claim lasts 6 months though may vary depending where you live. I live in Florida and I observed the 303 lasts about 3 months. I assume the heat, sun, and almost daily rain in the summer arr factors. In the Fall and winter months though...it will last the 6 months. Like I said , follow the directions and you see see the water beading right away. The finish and feel brings out a shine too. The pics is literally right after I sprayed 303 on my vehicles and rinsed it off. Water beading right away, and easy to clean right after. This is great stuff!!

I bought this stuff to protect the wheels of my 2018 Mercedes E63. I washed the car, sprayed it on, immediately rinsed it off, and then dried it with a microfiber towel just as the directions recommend. I know I got too much on in places because it ran and actually dripped off. The directions said not to do that warning that it could leave streaks or water spots, but it didn't for me (it might on a shiny painted surface). In fact, after application, the wheel looked much shinier than the other three, and it definitely beads water now. I only did one wheel (passenger front) as an experiment. the process took less than 5 minutes. I'll drive it for a few days and compare the brake dust buildup to the driver's side. Whether it stays cleaner or not, I'll likely do the other three after the next washing just so they all have an equal shine. At that point, I'll revise my review. I'll revise it again in a couple of months for longevity, but for now, so far so good. UPDATE: There was a noticeable reduction in brake dust buildup on the wheel I treated. In addition, it rinsed almost clean with just a spray from the garden hose. That being said, I treated all the wheels. Again, it took less than 5 minutes each. With all the intricacies of a wheel, I had to really pour it on. That resulted in runs and even drips, but I rinsed it really well then wiped it thoroughly with a cloth, and I had none of the water spots or streaks other people have reported. I'm satisfied so far. We'll see how long it lasts. UPDATE 2: I upgraded my review from four to five stars. This stuff works great on the wheels. Even months later, the brake dust doesn't stick nearly as bad as it did before I sprayed this stuff on. In fact, I think I'll give it a second treatment tonight just for good measure.

Excellent. I've tried a bunch of hyped SIO2 products like this & they all fall short of their performance claims. This one does not - it works great and is just as quick and easy to apply as stated on the bottle. I bought a gallon of it for around $50 and at that price it's a total no-brainer. Works as well as a fresh application of RainX on glass with considerably less effort. I'll update after some time if longevity falls short of 3 months or so on glass. If you don't see an update assume the product has met or exceed my expectations on that measure.

So I received a gallon vs the 4 gallons of product as listed but I’m not complaining as Amazon more than accommodated the discrepancy. The product itself is very light and effective but it is not as thick as other SiO2 (ceramic) post wash spray sealers I’ve tried. It works well but I probably wouldn’t buy this again just because for the price I can get other brands whose application experience I prefer better. Given it’s thinner it probably goes further with less but I do not apply this so frequently where I need to worry about that component. I would say this is a more professional level product in its volume and not aggressive application. As a dIy at home detailer it’s okay but I wouldn’t buy it again.

Really impressed with this product for: 1. Ease of application 2. Finished shine 3. Makes future washes easier 4. Lasts for a good while (Roughly 6 months for me). I've used this product on three vehicles and have purchased this item twice. The use of a pressure washer (What I use) versus garden hose may have an impact on how well the product is distributed among the vehicle surface, as the lower pressure of the garden hose may not distribute the product as well. Purchasing by the gallon has been the best value for me.

Great stuff

Always ensure the paint is cool when applying this product, but it works exactly as said spray on hose off. Makes the paint smooth and water bead and seems to last a decent amount of time as well. Do not apply in the sunshine. If it dries to rapidly, it will leave spots on the car which you didn’t have to use a instant detailer to get them off overall a great product and does exactly what it

Follow instructions, because if you don’t yes water drops will appear. Was pretty difficult to get them off after a few minutes. This is a fabulous protector for sure. It’s been applied for 2 days. Expecting rain in a few days. I have high hopes it will exceed my expectations. If anything changes, I’ll update. A little product goes a long way, was a decently large bottle of product. So update, 5 days later. From light mist to heavy downpour it did great. I could tell it was doing a good job, for everything wanted to bead off. Even my window wipers normally make some sort of noise. Almost dead silent, like the layer on the windshield is buttered up and the wiper is just gliding across. When I touch it with my finger it isn’t greasy or anything (except when first applied). I don’t think I need to keep looking for other products, for now this is perfect. Only real test that’s left is to see longevity. Hoping I get close to the 6 month mark, I’d be happy with even 3 months. Original purchase in May 2019. 2nd update may 2020. I’ve applied 2 times in the year, was trying for a 6 month interval. It’s more of a 4 month life after applied. Well for my car. Waited 2 extra months to make sure it was completely off. Properly applied makes black cars look so nice. Makes rubbers dark and new looking (only for a short time). But rest of the vehicle omg it’s so nice. By the way, my car is 5 years old. 70,xxx miles. Looks almost as it did when I first bought it. Never garage kept. Always outside.