Facts about Hair Growth Cycles
- 05
A brief transitional phase called catagen lasts only a few weeks and involves the follicle shrinking and detaching from its blood supply.
- 04
Each individual hair follicle cycles through growth phases independently, meaning not all follicles are in the same phase simultaneously, preventing wholesale hair loss.
- 03
Scalp hair spends approximately 85 to 90 percent of its time in the anagen growth phase, which can last between two and seven years.
- 02
During the telogen phase, shed hairs are replaced as new anagen growth pushes them out, a process accounting for the normal daily loss of roughly 50 to 100 hairs.
- 01
The hair growth cycle consists of three main phases: anagen (active growth), catagen (transition), and telogen (resting), with anagen lasting the longest.