I have used this product for over a month. It works okay overall. However today I was competing in a triathlon and when I exited the water, I noticed my right eye vision was blurry. After the race I rinsed it with cold water and it eventually went away. After researching online the surfactant used is known to cause eye irritation. Please be careful using this product. What probably happened in my case is there was build up of the surfactant on my goggles over time and eventually became gaseous and irritated my eye. I am surprised Speedo sales a goggle antifog product with an active ingridient known to irritate the eye!

The cap is not secure. It must snap in place to prevent leakage, but after a few uses, the cap no longer works properly, so the anti-fog solution drips into my swim gear bag. No way to fix it. This stuff is expensive, and I have had to throw away two nearly full bottles.