Trichoma

Hair is commonly called scalp, and its smallest components are trichomes, also known as hair follicles. Each of them carries a hair germ inside itself. The outer surface of the follicle has grooves and is called the cuticle. In fact, it can be called a protective shield of the hair. When excess levels of testosterone in men and estrogen in women accumulate in the body, seborrheic (oily) hair appears, which is considered common among these sexes.

The article discusses what a hair follicle is, its structure and main functions. It also shows illustrations of the three types of hair and their descriptions, as well as additional information about the different types of follicles, including "empty" follicles and those that are easily damaged and go through a short period of intense growth.