Armpits are powerful detoxification sites for the body. Preventing the body from sweating is NOT recommended for good health. 30% of the body's detoxification takes place sub-cutaneously (thru the skin), If the body is not allowed to detoxify it may be forced to re-absorb those toxins. When switching from an anti-perspirant to Under-Armour Deodorant the sweat glands may be over active for a period of time before balance is re-established. All your armpits to detoxify and use Under Armour as often as needed. Under-Armour kills odor causing bacteria while allowing the body to function as it was designed to.
FYI: There are 20 lymph nodes under each armpit so one must ask themselves if they really want to prevent there body from releasing the toxins that will otherwise be re-absorbed into these lymph nodes.