What phase of hair growth is known as the active growth phase?

The active growth phase of hair growth is referred to as the Anagen phase. During this phase, hair follicles are highly active, producing new hair cells rapidly. This is the longest phase of the hair growth cycle, lasting several years, and is crucial for the overall length and health of the hair. During Anagen, the hair strand stays firmly attached in the follicle and continues to grow, which is why this phase is associated with visible hair growth.

In contrast, the Telogen phase is the resting phase, where hair is no longer actively growing; Catagen is a transitional phase that occurs after Anagen, during which hair growth slows down and the follicle begins to shrink; and the resting phase also indicates a lack of growth. Understanding these phases is essential for anyone in the field of hair and beauty, as it lays the groundwork for hair care and treatment practices.