Aluminum chloride hexahydrate
"I would just like to start out by saying that Hypercare is an absolute miracle! It changed my life. I am 17 and have been having a sweating problem since my freshman year and all my friends always make fun of me for it because I will constantly be sweating and having armpit stains whether it's 100 degrees out or 6 degrees, I was always sweaty. So last week my mom finally took me the doctors and they prescribed me Hypercare...I used it that night and the Next day I had NO armpit stains! and the funny part is the day before this product I was wearing a brown loose shirt and I had the largest stains and then the day of wearing Hypercare I was wearing a light blue tight shirt and I had ZERO stains. It does sting a little but not that bad."