How sweat glands work
The main job of the sweat glands is keeping the body cool. Your body learns to react to signals that you are in a warm, stressed or physically demanding environment by putting on its natural cooling system: sweat.
All sweat glands are made up of two main parts – the coiled section where sweat is produced and the duct that acts as the pathway for the sweat to reach the surface of the skin.
It is important to distinguish between the two main types of sweat glands. The eccrine glands are the most common, and the ones found all over the body. Meanwhile, apocrine glands are larger, usually found on the armpits and more likely to be the site of sweat odour.
Sweat is caused when the sweat glands are triggered and secrete water and salt.
Did you know that sweat doesn’t smell? The odour does not actually come from the sweat itself. Instead, the body odour comes from the bacteria on the skin eating up the sweat at the apocrine glands. This is why the most important part of your body to apply your antiperspirant to is your underarms to stop armpit sweat.