Aluminum chloride hexahydrate
"When I was in middle school it is hard if you have hyperhidrosis. Your self confidence is way low and I can NEVER wear shirts without a jacket over it to hide the pit stains. It really did suck. I started using drysol in the sixth grade because of my excessive sweating and it's been helping ever sense. The first week of using it, there is going to be itching but after a few days it should be fine. Do not use it after shaving or don't put too much on and that's what will cause the burning sensation everyone's talking about. Use a small amount, dry it via air or a hair dryer and you should be fine to go to bed. There is no point in using this product every single night. I suggest it!"