There was a thread a while back about sweating...Someone said to look into Certain Dry, Bryan I think, but I'm too lazy to look up the thread....Well I gave it a try, and it stopped my armpit sweating after only 2 uses!!!!! This stuff is great, I CANNOT believe how well it works. I'm hiking across campus, it's hot and humid like a MOFO, I'm wearing scrub bottoms, carrying a big backpack w/3-4 large books, 2 meals, and a bottle of water.. Sweat is dripping off my face, running from my back to my ass, collecting on my stomach, and running down my legs......BUT, I lift my arm, and where there used to be a large sweat stain, it's completely dry!! I wish I could stop my face from sweating, but I guess you can't have it all......any big guys who sweat their ass off should definitely look into this....props to bryan for the heads up