I am having problem regarding armpit sweats. I have noticed over the past three months or so that no matter what kind of deodorant I use, I still sweat like hell. And with that sweat comes stains on my shirts, which are about to ruin a few of my nicer dark shirts. All of the mainstream brands of deodorant I know has aluminum. Has anyone found a decent all-natural deodorant that doesn't contain aluminum? I have been wearing undershirts since high school. They don't seem to offer much resistance and help at this point. Is there an acceptable alternative?