Rain-X 630046 Interior Glass Anti-Fog, 12 oz. - Prevents Fogging of Interior Glass and Mirrors, Usable on Both Automobiles and Marine Vehicles

The heater/defroster in my car stopped working and it was almost impossible to get the windows to defog in the morning. I cleaned my windows really well, applied a decent layer of this stuff, let it dry, then used a clean paper towel to buff the film away. Worked like a charm! My windows were crystal clear this morning! Worth every penny. UPDATE: one week later and there seems to be an odd film on my windshield. It didn't show up until about 2 days after using this stuff. My driver and passenger windows do not have the film but my windshield does. I'm going to clean it a few times and try to apply this stuff again to see what happens. Not sure why it worked so well on the other windows but not my windshield! Will post another update after I give it another shot. ANOTHER UPDATE: it's been about 2 months since my last update and I think I've got this stuff figured out! After cleaning my windshield again really well to remove the film, I reapplied this stuff the same way I did originally but buffed twice as much as the first time. They were crystal clear for about a month until it started to wear off! So I just did the same thing and it lasted about another month. So if you clean your windows REALLY well prior to applying this stuff, then buff the film off REALLY well after applying, it should last about a month before it starts to wear off and you slowly notice it fogging. This is the most effort I've ever put into a $5 Amazon product review but I hope it helps someone lol!

Worked WONDERFUL! My heater fan in my van went out that defrosts the front windshield and we were struggling for winter. I couldn't find anything that worked well then thought of this. This saved my time and life for and upcoming 12 hour trip. The windows were defrosted almost instantly once I got on the main road and cracked the windows. It was very easy to apply. I didn't have any issues with it causing streaking which nice that can be frustrating.

I don't find these effective cuz it smears the window of the windshield making unclear visibility.

Works but not as good as old squirt bottle. Easier to use than squirt bottle.

I tried out a window cleaner that actually caused my car windows to fog up so badly that even the defroster could not adequately clear it off. It would take some time before it could clear two small spots off the windshield. I tried using vinegar, alcohol, and even Windex to remove the window cleaner (it seemed it left a bit of a glaze or film behind), but nothing was working, so I purchased this product, used it and it worked wonderfully! The only downside I had was that buffing it off was a bit of a job but worth it to be able to drive the car with no more foggy windows!

Extremely difficult to use and leaves a terrible haze I bought this product based on the high ratings, but I am extremely disappointed. Even after thoroughly cleaning the glass and using a very minimal amount as instructed, it left severe streaks and a cloudy film all over the interior window. At night, the haze causes terrible glare from oncoming headlights, making it blurry and unsafe to drive. Trying to buff out the residue took an absurd amount of time and effort. Before I could even test its anti-fog performance, I had to clean the entire windshield again just to restore visibility. It is far too finicky to apply and simply does not work as advertised for car interiors. Save your money and time—I would give this zero stars if I could. 절대로 추천하지 않음. 구매후 반드시 후회함. 돈 낭비하지 말고 맛있는것 사드세요. 저도 후회하고 있음.

Surprisingly it worked, however depending on weather it does need reapplication.

Great for your car

Funciona bastante bien, lo volvería a Comprar

車のクーラーが壊れて、窓ガラスが曇るので購入。雨が降って湿度が高いものの、11月でそれ程それ程寒くない日で1人で乗車す分には、問題なく効果を発揮しました。もっと寒い日、車の乗車人数が多い場合には、窓を開けたり、乗車前にフロントガラスを十分事前に温めたりする必要があるかもしれないです。

I have used this product and it is highly effective. On a heavy rain I have tested from inside and it was like magic. No fog deposited with windows open on a rainy day. I love this product and will test in my J&K and Leh Ladakh trip on my car. This is a life saver in rainy and winter days. I highly recommend this product. Though the price seems higher compared to other brands but this is gonna last for more than 3 seasons.

good product

Useful product