Hair follicles originate in the first and second layers of your skin (epidermis and dermis). Follicles holding your terminal hair, or the hair that grows on your scalp, eyelashes and eyebrows, extend into the first and second layer of your skin and sometimes into the third layer (subcutaneous tissue). What does a hair follicle look like?

The hair follicle is a complex dynamic structure that is present in the skin of all mammals. Hair follicles have many functions, such as thermoregulation, sweat production, and skin...

Structure and layers of the skin. The hair follicle is a skin appendage located deep in the dermis of the skin. Its function is to produce hair and enclose the hair shaft. A hair follicle consists of two main layers, an inner (epithelial) root sheath and an outer (fibrous) root sheath.

hair can be defined as a slender, thread-like outgrowth from a follicle in the skin of mammals. Composed mainly of keratin, it has three morphological regions—the cuticle, medulla, and cortex. These regions are illustrated in Figure 1 with some of the basic structures found in them.

Basic hair structure explained. Learn how all parts of the hair follicle and layers of the hair shaft function together with diagrams.