Sweating is a natural process for our body to cool down. It is an internal heat regulation process and so our body produces sweat on a continuous basis. However, there can be time when sweating increases, like right after – jogging, running, exercising or any other physical work. Heavy underarm sweating can cause discomfort and by getting mixed with bacteria can cause the problem of body odor. Antiperspirants slow down the process of sweat production.
Sweating occurs due to natural causes. During hot and humid weather sweat glands - apocrine and eccrine in body releases sweat that helps body to cool down. Some parts of our body are more prone to sweat than others, such as – underarm. 
Deodorant helps with body odor but if you sweat heavily then it is antiperspirant that you need.
Antiperspirants block the ducts of eccerine glands to the skin and prevent the sweat from breaking to the surface. Most antiperspirants like - suave natural oatmeal lotion in the market use Aluminum as an active ingredient. It is the aluminum ions that get absorbed in skin and blocks sweat gland secretion.
If you are a fan of suave antiperspirant you can buy suave online from online drugstores. Most reputable online drugstores often have complete range of suave for sale.