The anagen phase is the active stage of hair growth, where the hair follicle is fully engaged in generating new hair strands. This phase typically lasts anywhere from two to seven years, depending on factors like genetics, age, and overall health. It's during this time that hair achieves its maximum potential length before transitioning to the next stage in the growth cycle. Proper care and nutrition can support a longer anagen phase, contributing to healthier and fuller hair.

The catagen phase is a brief transitional stage in the hair growth cycle. During this period, the hair strand separates from its blood supply, and the hair follicle begins to shrink, preparing for a period of rest. This phase typically lasts a few weeks and marks the end of active growth. Although short, the catagen phase is essential for the natural renewal of hair, as it allows the follicle to reset and prepare for the next step in the growth cycle.

The telogen phase is the resting stage of the hair growth cycle, during which hair growth pauses, and the strand remains in place until it is naturally shed. This phase lasts anywhere from several weeks to a few months, depending on individual factors such as age, health, and hormonal balance. During this time, new hair begins forming in the follicle beneath the resting strand, ready to restart the cycle. Shedding in the telogen phase is a normal part of hair renewal, with an average person losing 50-100 hairs daily as part of this natural process.