Just a drop on each lens and flush with cold water and your good to go. The vanquisher optical goggles work great at chopping onions by the by with, of course, the anti fog applied.
When the solution is freshly applied it works great. After a while it starts to fog and I have difficulty cleaning the solution off so I can apply a new layer. What do I use. I tried dish detergent, alcohol and bleach so far.
I followed the instructions on the bottle. The product worked great! I had some chemical build-up on my goggles, which I cleaned off as well as I could, prior to applying the solution. The eyepieces are so much clearer now, and stay that way while I swim.