One of the defining characteristics of all mammals, including humans, is the presence of hair on the body. Hair grows virtually everywhere on the body with the exceptions of the palms of the hands, bottoms of the feet, nipples, the distal segment of the digits and on parts of the external genitalia. Hair primary functions are to provide insulation from the cold and to protect the body.

Types of HairStructure of HairHair GrowthHair Loss

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