Ayisha
Contributor
Isn't a bottle of Sea Gold like $5?
And Seavision is $5 which IMHO is way better than Sea Gold. Sea Gold is good and better than Sea Drops. Some people like PSI 500, others don't think it's that great. Seavision (my original bottle said Seavision USA) is the most amazing defog I've ever tried. It simply never fogs. And it can be used on a wet mask and over multiple dives. The original bottle says something like "A clean mask doesn't fog. Seavision cleans while it clears". Leaves no gunk that causes fogging later.
You can see Seavision here: Sea Vision 2 OZ. Spray De-Fog Bottle