heavy sweaters may need both deodorant and antiperspirant [SEP] product was easy to use but read directionsthe antiperspirant was great in roll on the breast application was ok because i need one for my face and head otherwise the sweat kept pouring this is not a cure all especially after a heavy workout out or a hard walk in the sun i am giving it a month to perhaps see the best effects and even if it helps to lessen the severity i will take it