In which phase of hair growth is new hair produced?

In the hair growth cycle, the anagen phase is the stage where new hair is actively produced. During this phase, which can last for several years, the hair follicle is in a state of active growth, undergoing cell division and elongation. This results in the formation of new hair strands that emerge from the scalp. The duration of the anagen phase can vary depending on genetics, health, and other factors, but it’s crucial for determining hair length and density.

In contrast, the telogen phase is a resting stage where hair falls out and new hair begins to grow underneath. The catagen phase is a transitional phase, marking the end of active growth and the beginning of the resting period. The exogen phase refers to the shedding of the old hair, which occurs after the telogen phase is complete. Understanding these phases is essential for estheticians, as it helps them recognize hair growth patterns and informs their treatments and recommendations.