What is the function of the anagen phase in hair growth?

The anagen phase is the stage of hair growth characterized by active growth. During this phase, which can last for several years, hair follicles are engaged in producing new hair cells rapidly. This is the phase where the hair shaft is formed and grows in length. The duration of the anagen phase can vary based on genetics and other factors, but it is crucial because it determines the maximum length that hair can achieve.

In contrast, the other phases of the hair growth cycle serve different purposes. For instance, preparation for shedding is associated with the telogen phase, while transitioning out of growth aligns with the catagen phase. Repairing damaged hair is not a specific phase but rather a general hair care practice. Understanding these phases helps clarify the cycle of hair growth and the role the anagen phase plays in establishing healthy, growing hair.