KeySmart FogBlock Anti-Fog Spray for Personal Protective Equipment Masks

D Mac: Used in conjunction with surgical masks. Noted a marked decrease in lens fog after using, but didn't totally stop fogging. Adjusting glasses and mask wire helped - still use in conjunction with glasses to see clearer.

Australia on Sep 02, 2023

Amazon Customer: I’m a daily 1 mile swimmer . This is the ONLY spray that works for swim googles not to fog . I’ve tried them all . Bought first at Advanced auto for masks fogging up eyeglasses well I bought them all out and then I found them here and I bought multiple and will be back to buy more again soon. Great anti- fog especially for swimming.

United States on Aug 06, 2023

Christie Campbell-Wood: Works really well

Canada on Apr 26, 2023

"Firedawg": I live where it is cold outside and I like the temp in my house to be toasty so when I go outside my glasses always fog up. This stuff keeps them clear. No more taking off my glasses and squinting to see until they clear up.

United States on Mar 20, 2023

Amazon Customer: Product is easy to use and does seem to stop some fogging.

Canada on Mar 20, 2023

GEDEON64: Produit aussi efficace qu'un produit dont on voit la publicité mais beaucoup plus cher .
Je suis très satisfait et je vais désormais commander cette merveille .

France on Feb 06, 2023

Gst42: Find it a bit pricy and would like larger bottle.

Canada on Jan 04, 2023

MitchW: This was hyped as an amazing anti fog. I'm a full time photographer for decades with glasses who has worked indoors/outdoors and under all sorts of conditions. Willing to try anything which improves my working conditions. Even something new and much more expensive than my tried-and-true options. All anti fogs work by leaving a film on your glasses so that its harder for condensation to form. This worked OK. Was easy to apply since it's a spray as opposed to others which you rub on. Those leave swirls, this is easier in that sense. But I had to sit and wait for this one to dry as opposed to the rub on ones which are "done" immediately. Didn't help at all with "mask fog" which it was heavily touted for. There are alternatives which are cheaper and work just the same. More convenient than rub-on. Works the same as cheaper alternatives. Not sure that's worth the premium price.

United States on Apr 20, 2021

Bradikal: So far this stuff seems to be working. You clean your glasses, then spray both sides of the lenses and let it dry for a few minutes.

It dried clear, without any waviness being visible. I tried a different product that had to be wiped on, and it distorted the view through the lens. THIS stuff is perfectly clear. I tried my best to fog the lenses by breathing on them and they would not fog up!

If this stuff was a bit cheaper Id give it 5 stars instead of 4, but I may well buy more of it.

United States on Mar 23, 2021

Catherine H. Hinkley: I had high hopes for this spray after seeing it on GMA. I have found, however, that it takes much longer to dry on my glasses than expected and leaves behind speckles. If I'm going somewhere where I have to wear a mask, the timing of application is tricky. If I put it on before I leave my house, I have to be sure to allow 10-15 minutes for it to fully dry and my glasses are cloudy when I drive. If I wait till I arrive at my destination, I have to sit in the car for 10-15 minutes before being able to wear my glasses. It definitely helps with the fogging part, but is not as convenient as I had hoped,

United States on Feb 02, 2021