What is the name of the growing stage of the hair growth cycle?

The growing stage of the hair growth cycle is called Anagen. This phase is crucial as it is during Anagen that the hair follicles are actively producing hair. The duration of this stage can vary from a few years to several years, depending on individual factors such as genetics and health. During Anagen, the cells in the hair bulb are rapidly dividing and pushing the hair shaft upward, leading to the lengthening of the hair.

This stage is contrasted with the other phases of the hair growth cycle. For instance, during the Telogen phase, the hair is in a resting state and doesn't grow; while in the Catagen phase, there is a transitional period where hair growth slows and the hair follicle shrinks. The Exogen phase refers to the shedding of hair, which is the last stage before the cycle starts again. By focusing on Anagen, it’s clear why it's defined as the active growth phase and why it’s vital for healthy hair development.