The growth and loss of hair may seem like a simple process, but the hair growth cycle is actually composed of four distinct phases. These stages of hair growth have been studied in great depth to better understand how hair grows and what might be done to prevent or treat premature hair loss.
The first three phases — anagen, catagen, and telogen — cover the growth and maturation of hair and the activity of the hair follicles that produce individual hairs. During the final, or exogen, phase, “old” hair sheds, though usually, a new hair is getting ready to take its place.
Each phase has its own timeline, which can be affected by age, nutrition, and overall health. That means there are steps you can take along the way to help ensure that your hair follows a healthy growth cycle. Read on to learn more.