Are you using deodorant, antiperspirant, or antiperspirant-deodorant? They are different. Deodorant is used to "cover up" or present a different odor; it's clo

Are you using deodorant, antiperspirant, or antiperspirant-deodorant? They are different. Deodorant is used to "cover up" or present a different odor; it's closer to perfume or cologne, just in a different form. Antiperspirant is used to keep you from perspiring; the most common form works by simply clogging the pores (temporarily). By itself, it does nothing for any other body odors. Combine them (the last option) and you get the best of both worlds. The only time you would use them separately is if in the first case, you have a different form of antiperspirant that you like to use vs your deodorant, or you have a particular perfume or cologne that doesn't go well together with the antiperspirant you like to use. But most people can find a combo that smells nice and works well for most of the day (and may even work well with their perfumes/colognes). All that said - if you are doing outdoor activities or hard labor, little to nothing will work to stop things altogether, and honestly, 18 hours is pretty good strength in my opinion. But - if things are really problematic - talk to your doctor. Make sure it isn't some physiological issue, or your diet (as recommended by another poster), or anything else. As a last resort, there are drugs and even surgery available for extremely severe issues (usually for those who perspire uncontrollably throughout the day and night).