I use this product on my teak decks and it lasts for a couple years when 3 coats are applied. The color of the teak is beautiful and the durability is excellent. All the decks on my boat are 100% teak. The swim platform is also teak and will withstand as much water as I can give it. The down fall is that I can't find it in the gallon size anymore.
I used this product on a teak cockpit grate to hopefully prevent it from turning gray. I also used it to wipe down the interior surfaces of the cabin. It helped make the cabin look better. After I applied it on top of the existing varnish it gave the cabin a look like I had revarnished.