What's the driest deodorant (men)?

You are looking for an antiperspirant not a deodorant. The best I have used that is easy to find is Mitchum, green package and available at all the major stores. The absolute best product that I have ever used is called Drysol. This used to be available on has a prescription, but can be found now over the counter. I haven't seen it in any stores, although a pharmacy may be able to order it for you. If you do a Google search for Drysol you can find it sold under several names. You only need to apply it every other day. I would suggest using a deodorant with it, but it will keep you dry. It has a very high concentrate of aluminum and after about a weeks use you will not sweat under your arms any longer.