If excessively sweaty armpits have plagued your life for a long time, don't lose too much sleep over it. There is hope. Hyperhidrosis no longer has to ruin your life. There are two main products available to help mask the problem of hyperhidrosis. There are antiperspirants available that work to control excessive underarm sweating and deodorants that do nothing to stop excessive underarm sweating but only make it smell a little sweeter.