home Health The Three Phases of Hair Growth (and Loss)

The Three Phases of Hair Growth (and Loss)

You were born with hair on your head so you probably don’t think much about it.  Sure, you get a haircut once a month or so and you style and wash your hair on a regular basis, but you probably don’t really think about how your grows and how it is lost.

You see, we lose about 100 hairs a day.  However, it can take a single hair as many as 7 years to proceed through its life cycle.  That means in order to maintain a healthy head of hair; you must be growing more than 100 hairs on your head—on average—at any given time.  And while your hair grows, it goes through three growth stages.

The ANAGEN PHASE of hair growth

The first phase of hair growth is known as the anagen phase. During this Capilia.com phase, the papilla divide and produce new hair fibers over the course of two to six years.  This time frame is determined by genetics.  Each follicle will bury itself into the dermal layer of the skin (the outer layer) and take root.  The majority of the hairs on your head—approximately 85 percent—are probably in the anagen phase at any given time.

 

The CATAGEN PHASE of hair growth

During the anagen phase, the body sends out signals as to when to stop it and move on to the catagen phase.  This second stage is characterized by the cessation of melanin production.  The phase lasts about two weeks and it is a transitional phase whose purpose is to help the follicle renew itself (as it is about to take the root of a new hair strand).  During this period, the hair stops growing—though it appears to grow, as it pushes outward from the dermis.

The TELOGEN PHASE of hair growth

The final phase of hair growth is characterized by a “resting” of the follicle, which sleeps for roughly four months.  The follicle comes out of hibernation, then, at softens at the base so it can break free from the scalp.  After about two weeks, new hair will grow.  While nearly 85 percent of the hairs on your head are in the anagen phase, nearly all of the remainder is in this phase.

Several things can interfere with hair regrowth, which is how we end up with “hair loss”.  Infection, pollutants, toxins, and stress (among other things) can all disrupt this process.