Getty
According to The MNN..
Citric acid in lemon juice can kill odor-causing bacteria, and there are people who swear by the lemon deodorizing method. Jennifer Palmer, chief executive of an organic skincare line, told The New York Times that she swipes her armpits with a sliced lemon on a daily basis. Just be sure not to apply lemon juice to recently shaven armpits — ouch!
Source
