The Anatomy of Hair Growth Cycle: How It Works

Anatomy Growth

and Health

Hair growth is complex and fascinating. Understanding the stages of the hair growth cycle gives us insight into how we can best take care of our hair. Hair growth, also called follicle cycling, is the process by which hair grows from the scalp, over the course of several cycles.

The Phases of Hair Growth Cycle

The hair growth cycle can be divided into three distinct phases: the anagen phase, the catagen phase, and the telogen phase.

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The Anagen Phase

The anagen, or growth, phase is the longest of the three phases lasting anywhere from two to six years. During this stage, the hair follicle produces healthy new hairs. Hair grows approximately one half inch every 28 days during this stage. The anagen phase hair can be categorized as having strong and thick roots and is typically unaffected by common styling, aging, and damage.

The Catagen Phase

The catagen, or transition, phase typically lasts about two to three weeks. During this time, the hair follicles shrink and hair growth halts. This is the time of transition when the new healthy hair stops growing and begins to separate from the scalp.

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The Telogen Phase

The telogen, or resting, phase typically lasts three to four months. During this time, the hair follicles lie dormant and hair growth stops completely. At the end of the telogen phase, the old hair is shed and a new hair is formed in the anagen phase.

Health Benefits to Maintaining Your Hair Growth Cycle

Maintaining good hair health is essential for a healthy overall lifestyle. Taking care of your hair during each stage of the follicle cycle can help to ensure that it remains strong and healthy.

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Steps to Maintaining Healthy Hair Growth

To ensure healthy hair growth, it is important to follow a few steps:

  • Avoid heat styling
  • Use gentle products
  • Eat a balanced diet
  • Avoid over-brushing or excessive styling
  • Regularly moisturize your hair
  • Protect your hair from the sun


The hair growth cycle is a complex and fascinating process. By understanding the stages of the cycle, you can better take care of your hair and ensure that it is healthy and strong. Taking the simple steps outlined above can help you maintain healthy hair growth and increase the lifespan of each hair cycle.