To perspire is one of the most natural & necessary things. Actually perspiration is odour free, however it will disintegrate by bacteria of the natural skin flora. Subsequently an unpleasant odour will develop. Therefore it is important to reduce this without destroying the skin flora. To apply an antiperspirant on a small area of your skin during the day will not disturb the evacuation of toxins by the skin cells i.e. the sweat cells. First of all the area is very small (in comparison to the entire body) & second we are talking of approx. 15 hours a day only. It is very important that our body smells well & fresh! Otherwise close contact with other persons might become a problem.