What type of hair is referred to as "club hair"?

Club hair refers to a hair that has completed its growth cycle and is no longer actively growing, making it a non-living hair that has become detached from the follicle. This type of hair can be identified by its rounded, club-like shape at the end, which distinguishes it from actively growing hair that remains firmly anchored to the scalp.

During the hair growth cycle, hair goes through phases, including growth (anagen), transition (catagen), and rest (telogen), where club hair typically emerges. This phase is crucial for understanding hair growth and shedding. As hair transitions into the telogen phase, it becomes weaker and eventually falls out, leading to the formation of club hair that is ready to shed.