What term is used to describe the hair growth phase where hair actively grows?

The term that describes the hair growth phase in which hair actively grows is "Anagen." This phase is crucial in the hair growth cycle, as it is the longest of the three main phases, lasting several years for scalp hair. During the Anagen phase, hair follicles are biologically active, resulting in the production and elongation of hair strands. Factors such as genetics and health can influence the duration of this phase and the rate of hair growth.

Telogen refers to the resting phase when the hair is not actively growing and is preparing to shed. Catagen is the transitional phase where the hair follicle shrinks and the hair stops growing but is not yet shed. Exogen involves the shedding of hair from the follicle, completing the hair cycle. Understanding these phases is essential for hairstylists and beauty professionals as it informs them about hair growth patterns and can influence their work in styling and treatments.