hyperhidrosis
"I have experienced excessive underarm sweating since my teens and have been so annoyed and embarrassed.  Why didn't I check into this sooner??  This product is amazing!  I agree with other reviewers about the burning/tingling sensation.  When I first started using it about a month ago, I followed the directions and used it for three consecutive nights.  It burned, I won't lie.  It kept me from getting a full night's sleep.  BUT, the results were worth it!  After just one application, it worked!  The next day there was NO wetness.  I now apply it just once a week, and it is still effective for me.  Plus, the burning sensation has never occurred again.  I do find it necessary to apply deodorant (not antiperspirant) in the morning."