When making the switch to a more natural deodorant, you may experience heavier perspiration and even a fail day or two. Don't panic. If your body has been used to antiperspirants which, to a great degree, prevent perspiration, your body is now able to more freely release toxins and other buildups in the 'pit area. The longer you are antiperspirant free, the less perspiring you're likely to do as things balance out. That doesn't mean you won't perspire at all, though. Perspiring is a natural process of the body. A fail day or two might also signify the balancing of body chemistry, not so much that the deodorant itself has failed.