Which of the following is NOT part of the hair growth cycle?

The dermal phase is not recognized as a part of the hair growth cycle, which consists of the anagen, catagen, and telogen phases. Understanding these phases helps in grasping how hair grows and develops.

The anagen phase is known as the active growth phase where new hair cells are produced, leading to the lengthening of the hair strand. This phase can last several years, with the duration differing among individuals and hair types.

The catagen phase follows the anagen phase and is characterized by a transitional stage lasting a few weeks, during which hair growth slows, and the follicle prepares to enter the resting phase.

The telogen phase is the final stage, where hair is shed, and the follicle remains inactive for a period before potentially returning to the anagen phase to begin the cycle anew.

Recognizing the structure of the hair growth cycle is crucial for understanding hair health, treatment options, and the natural shedding process.