First PP if you want to go natural don't go with the roll on. I don't know anyone who had success using it. You need to use the solid deoderant crystal (basically a rounded salt lick :)) Anyway once you switch from deoderants that are packed with chemicals (or antiperspirants) you will stink horribly for a few days while those chemicals are purged from your skin (remember you were putting that stuff on daily). The smell is especially bad if you were using antiperspirant before. I found that if you just wash and use powder in the morning that the smell won't be as bad. Do that for a few days before switching to the deoderant crystal, wearing a heavy shirt may help with keeping the odor to yourself. If you don't do this it will affect how well the deoderant crystal works. After your body has had amply time to properly sweat as it should and get rid of any backed up chemicals you can just wash and use the deoderant crystal. For me it usually gets me through the work day. I typically take a shower in the evening anyway, so it isn't a problem for me. The funny thing is that while I was using an antiperspirant I would sweat from my arm pits constantly, and the smell was less than attractive, not to mention that the arm pits of most of my shirts were yellow. I have none of those problems since I switched. :)