Have any of you tried the Stream2Sea defog?

I just learned that Stream2Sea, a company that makes reef-safe sunscreen and reef-health sunscreen, also makes mask defog. I've often had trouble with mask defog fading during a dive, so then I have to start clearing my mask periodically, so I've been meaning to try something new. Have any of you tried the one from Stream2Sea? What did/do you think of it?