Do probiotic deodorants really work?

We tested 6 brands, risking pit stains and smelliness, so you don’t have to. “I wonder if a probiotic deodorant is right for me?” kinomoto41 via Flickr Summer is finally here. That means lots of sunshine, beaches, hiking, and (for me, at least) armpit stains. I’m tired of ruining my white shirts with nasty yellow-brown sweat…