First off eliminate the problem! I swear by the Avon brand On Duty Clear Protection Anti-Perspirant Deodorant. It doesn't leave marks, no caking, no sweating and its .99. www.youravon.com/dhullum Best stuff ever.
Now to fix the shirt. Buy an expensive soft bristled toothbrush. Try very gently rubbing the area with the toothbrush to loosen the "cake" Then turn the shirt inside out to wash it with warm water which will help loosen the goo. Once its washed check to make sure its all gone if it isn't repeat the process. You don't want to put it in the dryer if any of it remains because it will melt onto everything. Hope that helps!
at 12:49 AM on Mar. 13, 2011