Rain-X AF21212 Anti-Fog - 7 fl oz. by Rain-X

Have a strong after smell, but it goes away after a while. Other than that the product works very well

Worked brilliantly on the side windows.working on the front windscreen but seems to have left a film which slightly dulls the view

it is not as good as Costa !

Followed instructions, did it twice, made zero difference!

note that with every defog product i have used, (more then a dozen) including with motorcycle helmet (the worst fogger) you have to leave enough on you get a slight rainbow distortion. removing more product till totally clear it will remove too much product and it will fog. this product i put on windshield of car because engine-deffogger fan is broken. i meant to use with electrical added fan but got caught in the rain, but it kept the fog off my windshield except for the patch i rubbed too much off of. you have to balance the rainbow distortion and the fogging, but as i said, this is true in every product i used. i added it to the drivers window and again drove in rain with no fogging at all. its really best to wait until is wet outside and your windows are totally fogged to sit in your car and apply to get the correct ratio between rainbow distortion and fogging. if its a motorcylce helmet you need the strongest type, last i used went on like chapstick and then rubbed in. still same balance between rainbow distortion and defogging.

I got this for my shower's glass door/walls. It works great! Except... ...if you rinse it with water, then the magic (err... Rain-X) gets rinsed away too. I watch my TV through my glass shower door/wall and the fog build up is annoying. Can't watch TV through fog! Application: I take a small cloth that I keep next to the bottle of this in my bathroom cabinet, and wipe the area of glass that I plan on viewing from. Only a light coating is needed. You don't need to oversoak the applied area, cause if you do, you'll get a smudge film (haze) that's almost as bad as the fog. It works magic with just a fine film. Everywhere I wiped this, stays clear (fog and haze free). Everywhere else (top, bottom, sides, etc.) is fogged up. But after the shower... I rinse down my shower walls, and wipe the walls/door dry with a squeegee, and next time I shower... the Rain-X is gone. NOTE: It does come off with just the rinse, even if no squeegee is used. So try not to rinse it off if you want it to last. That's the only reason I gave it 4 stars... cause it does rinse off so easily. Maybe a 4.5 stars would be better rated. So if applying in a vehicle... and you are rinsing down the inside of your windows... I think you'll have bigger problems than just fog.

I use a vape so during the winter my windows get fogged up with the condensate from constantly having hot vegetable glycerine in the air. This stuff is perfect for preventing my windows from fogging up. I used to have to clean my windows every three days but instead I clean them every 3 weeks and then reapply this stuff. The picture does not match what I got, I got a spray bottle which is actually better than what the picture shows. My personal recommendation would be that less is more. Do not apply too much or it will make your windows look worse than before. I usually do one spray on a clean paper towel square per window and then use a separate clean paper towel square to buff it with linear NOT circular motions. I usually use one spray for half of my front or rear windshield leading to a total of two spray per windshield.

works, but not that well .

I was optimistic when I got the Rain-X Anti-Fog after watching several video reviews showing its fog-reducing capabilities. I live in a quite humid area, so fog has always been a problem on my vehicles. I applied Rain-X Anti-Fog to half of my windshield to try it out first; the next morning, as is often the case, the untreated areas of my windows fogged up pretty significantly; the area where I applied the Anti-Fog, however, was nearly fog-free! That evening, I promptly applied Anti-Fog on the remainder of my car's glass. Everything was great, until later that same week, the windows started fogging up so badly that I couldn't see out of the car at all. For the next several days, it was the same story — my glass fogged up even worse than before the Anti-Fog. I finally had to give my windows all a good scrubbing with glass cleaner to remove the fog-promoting "Anti-Fog" film off.