Many people assume that deodorant is the same as antiperspirant, but they are different products that resolve two separate and very specific problems. One product is used in just one area of the body, while the other can be used in multiple places.
A deodorant is a product that eliminates and controls odor. Deodorant is usually spoken of in reference to the product that gets rid of underarm odor, but can also apply to feminine and foot products.
An antiperspirant is a product for the underarms that contains aluminum. When applied to the armpits, it clogs the pores to prevent perspiration from occurring. Like a deodorant, it usually has a fragrance to make the user smell good.
While deodorant can mask the odor temporarily, it cannot stop a person from sweating the way an antiperspirant does. Once the sweat combines with odor causing bacteria, the underarms will begin to smell again.
Some products for the underarm are a combination between an antiperspirant and a deodorant.
Antiperspirants are best for people who work out and play sports, while deodorants are best for a low-activity lifestyle.
According to the National Cancer Institute, there is no conclusive evidence that either deodorants or antiperspirants can cause cancer.