In humans, there are two kinds of sweat glands which differ in both their composition of sweat and its purpose. Eccrine sweat glands are distributed over the entire body surface. These produce sweat consisting mainly of water with various salts. These glands are used for body temperature regulation. Apocrine sweat glands produce sweat that contains fatty materials. These glands are mainly present in the armpits and around the genital area. These glands are usually absent in areas affected by stretch marks.

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