It works correctly, does what it says, but the glasses easily get dirty and it doesn't come off easily with a simple cloth. It lasts about 3 days with daily use before needing reapplication.

As an anti-fog, it does the job but for immediate use, up to one or two days with gradual loss of performance. As a cleaner, it is excellent.

If you follow what it says, it lasts at least two days... meaning you first wipe front to back, spray, and then wipe front to back again... that's how it works.

To me, it never lasts as long as it claims or as much as I would like, not even half a day, let alone one or two. In the beginning, it does a good job though. However, in case there is a lot of humidity, it becomes liquid and runs on the glass, resulting in not being able to see anything. Besides that, one star is lost both due to the high cost and because I think it has damaged the coating of the lenses in one spot. And the color of the (plastic) frame, I believe, has been altered. Specifically, the areas that touch the skin (around the nose) have turned yellow. I have had my glasses for years and they have never had the slightest issue, so I am almost certain that it is due to this spray. I don't know if I would buy it again, especially if I change glasses, I will definitely not use it on them. I prefer to wear my old glasses with a mask, even if I have dry eyes, or even contact lenses.

I followed the instructions to the letter and tried wearing my glasses with an FFP2 mask.
Everything was fine for about 20 minutes and then my glasses started fogging up again. I was disappointed.
While with thin masks, the glasses are perfectly fine.

A little expensive, but I only spray it once and clean it with its cloth. That alone is enough for the whole day. It's a daily necessity since I wear a mask and glasses!

The product is expensive and the quantity is relatively small, but at least it is effective, the glasses indeed do not fog up with the mask.

Very effective! As long as you remember to use it almost every day, you have no problem with blurriness!

Finally, a product that does what it promises. I have tried other lens-spray wipes without any lasting results, as I have severe myopia and taking off my glasses when they get foggy is not an option for me. Thankfully, this one works and lasts all day.

It is quite expensive and in the end I didn't use it almost at all. Of course, I had the alternative of not wearing my glasses at all when wearing a mask because I don't have a high prescription.

It is perfect for not fogging up when wearing a mask. It lasts comfortably for 1 day, but if it gets wet, the system gets ruined. I went out in the rain and came back partially fogged up! But it is definitely worth it for glasses and mask combo, clean well with another product and then use this one to create the anti-fog layer and you're ready!

The best product ever for us glasses wearers! Within a year, I have consumed more than one package, and it goes without saying that it is worth every penny until the very last minute!

The truth is, it is a bit expensive indeed, but it does a very good job and if you use it correctly, it lasts for 3 days without the glasses getting blurry. I first wash the lenses very well, then I wipe them to dry and then I spray the liquid on the lenses inside out and let them dry on their own. Before wearing them, I gently wipe them with the special cloth. I bought it on February 20th, I wear glasses daily and it hasn't run out yet, and sometimes my friend also uses it for his sunglasses.

It does exactly what it says! Finally, glasses do not fog up when wearing a mask. You spray the cloth and wipe. The more you use it, the better it gets! And it lasts! I recommend it! It's worth its money!

Incredible product for those of us who wear glasses and a mask together!!!! It lasts all day at least!!! Expensive indeed but worth every penny and more!!

Very good product although a bit expensive. It is not European according to the label and it is a bit rare in the country.