T Nation

So I've got this problem...

I can’t wear white shirts! No it isn’t because I fear they make me look fat but because of armpit stains. My ‘wife beaters’ are all stained and so are any light shirts that come into contact with my underarm. Anyone else share this problem and more importantly, have any suggestions as to solutions. I know it has something to do with the interaction of my deorderant but I’ve switched brands numerous times.