text: how do you get an arm pit to stop sweating? ok, here's the deal, it's only one of the arm pits that sweats.  going crazy tring to figure that one out.  i raise my arms, one pit is  as dry as the sahara, and the other seems to be making up for that.  help!!!! u probably have hyperhydrosis...a condition where there is excessive sweat production. there are liquid preparations containing aluminium chloride from the pharmacy such as driclor. apply it on your armpits at night...and u will find that your sweat production is reduced the following day. hope this helps!