During which stage of the hair growth cycle does growth actively occur?

The hair growth cycle consists of several stages, and each of these stages has a distinct role in hair development. The anagen phase is the stage during which active growth occurs. This phase can last from two to seven years, depending on various factors such as genetics and age, during which the hair follicle is highly active in producing new cells and lengthening the hair strand.

During this time, the hair is firmly anchored in the scalp and continuously receives nutrients and oxygen through the blood supply, facilitating its growth. The other stages—telogen, catagen, and exogen—have different functions. The telogen phase is a resting stage, catagen is a transitional phase where growth stops and the hair follicle shrinks, and exogen involves the shedding of the hair. Understanding these phases helps in the analysis and management of hair health and growth.