I received my free sample from S2S this week. Did four dives, two yesterday and two today. First two in the pool with a class - water temp 89F. Two in the Shark River Inlet, NJ - water temp 73F. Used baby shampoo in left lens - Stream2sea in right lens. I did umpteen mask removals in the pool and at least four in the ocean.
Method: As per manufacturer's instructions, I placed a very small amount of S2S in the right lens and mooshed it around. I sprayed my usual BS (30% BS - 70% H2O) in the left. Rinsed with dive water immediately prior to each dive. I did not re-apply either after both first dives.
Results: Stream2sea had absolutely no fogging issues whatsoever. Remained clear no matter what I did with my mask. BS had minor fogging in both the pool and ocean especially after mask flooding. (Small patches of fogging). My mask was perfectly clear in right lens for four dives. I have to say that I was initially skeptical but no more. Unlike 500psi or SeaGold, one bottle of this stuff (2fl oz) will last a long time. You use much less product and it's much easier to apply. The clear plastic bottle is also a nice touch and lets you see how much is left in the bottle unlike the first two.
I was not compensated in any way nor am I associated with
@Stream2Sea . I will definitely recommend to students and that's the highest recommendation I can give.
@lowviz take note!