500 PSI Mask Scrub, 2 fl. oz. Bottle

This is a thicker (think thin toothpaste) defog than the Sea Drops I've used for 20+ years. It did a pretty good job for my mask on both dives of the day but my daughter had some fogging. I applied it to her mask but she rinsed it, so maybe she got really carried away with rinsing? All I know is my son and I had mostly clear masks with just a few tiny spots but she had to flood and purge her mask several times.I can't give any more feed back yet, as we had to leave the ocean behind and return back to our inland lives... :-( If I get a chance to go diving again this year I'll update. But for now, as I used for title, Works pretty well, but I still prefer Sea Drops...

I was skeptical. After scrubbing the 3rd time, I could really tell the silicon film on the inside of the glass coming off. Breathing on lens after each scrub showed quickly where the film remained. Was very, very worth the effort. I scuba dove for years without truly understanding this and being afraid to scrub my lens. This 500 PSI scrub worked perfectly. No scratches on glass. I scrubbed about 5 times before my first dive with my new mask, and it worked perfectly. I used the 500 PSI mask defog as well in between dives, which I also recommended, but was no where near as important as this critical first step. I'm converted. I applied it to all my kids' masks and my back up masks. What a difference.

I do a lot of diving and this was on the boat one time. It works really well first dive of the day in conjunction with defog to keep your mask clear.

Terrific. Does the job in seconds. Great to see underwater again!

Didn't work as well as toothpaste or Scrub.

Good stuff

Love the item. Great quality!!!!!