The consumer typically confuses what antiperspirants and deodorants do, mostly caused by a misunderstanding of marketing claims and product positioning. Antiperspirant and Deodorant technologies deal with wetness control and odor protection of the human axilla, how they are applied, and potential adverse effects of use of these products on a regular basis. Skin has two types of sweat glands: eccrine glands and apocrine glands. Eccrine glands open directly on to the surface of the skin and exude sweat in the underarm, subsequently contributing to odor formation. These glands are located in the middle layer of the skin called the dermis, which is also made up of nerve endings, hair follicles, and blood vessels. Sweat is produced in a long coil embedded within the dermis where the long part is a duct that connects the gland to the opening (pore) on the skin's surface. When body temperature rises, the autonomic nervous system stimulates these glands to secrete fluid on to the surface of skin, where it then cools the body as it evaporates. Apocrine glands secrete a fatty substance. When under emotional stress, the wall of the tubule glands contract to push the fatty exudates to the surface of skin where bacterial flora begin breaking it down.