Deodorant and antiperspirant stand side by side in stores and are often perceived as two words for the same thing.
For most people, the choice is routine-based and rarely grounded in knowledge of what the products actually do. This can lead to expectations that are not met.
What is sweat?
Sweat primarily serves a practical function. It helps the body cool down.
According to The Conversation, sweat itself is odorless. The body releases sweat from different glands, and the most common type consists mainly of water and salts.
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In the armpits, however, there is another type of sweat gland that produces a fattier form of sweat.
This sweat only begins to smell when bacteria on the skin break down its contents.
In other words, it is not the sweat itself, but the activity of bacteria that creates body odor.
Two solutions to one problem
This is where the products differ. Antiperspirants are designed to reduce the amount of sweat.
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They do so through aluminum-based compounds that temporarily block the sweat glands. Less sweat also means fewer conditions for bacteria to thrive.
Deodorants work differently. They do not stop sweat but aim to limit odor.
This can be done by inhibiting bacteria, masking odor with fragrance, or altering the skin’s environment so bacteria are less able to thrive.
Why we get confused
Both products are used in the same area and are often marketed in similar ways, which makes the difference unclear.
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Ultimately, it is the need that determines the choice.
If the goal is to sweat less, an antiperspirant is relevant. If the main concern is odor, a deodorant may be sufficient.
Sources: Medical Xpress, and The Conversation.
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