Sometimes normal deodorant is not enough. Smell isn’t the only thing people with excessive sweating want to avoid, they also want to avoid sweating even more.
Antiperspirant is a type of deodorant that helps reducing sweating. Aluminum salts is the ingredient in this type of deodorant that creates a gel-layer that stops more sweat coming out (degreedeodorant.com).
So, if you’re looking for a deodorant that keeps away smell and sweat, look for the antiperspirant ones. Most brands have them, and is easy to find in grocery stores and also pharmacies.