The Hair Growth Cycle

In order to have an awareness of hair loss, it’s important to understand the hair growth cycle. This will allow you to pinpoint any abnormalities in your hair growth and loss, and can potentially help to determine the cause of any excessive hair loss.

There are three distinct stages of the hair growth cycle: the anagen phase, the catagen phase and the telogen phase. When one or more of these phases is disrupted due to a medical condition, stress, trauma or some other reason, hair loss can result.

hair growth cycle

 

Anagen Phase

This is the growth phase. In general, hair grows about half an inch per month, and often grows faster in the summer months than in the winter (likely due to the climate and increased absorption of vitamin D and others). On average, the anagen phase lasts between three and five years. If a hair was allowed to grow for the full phase, it could reach up to 30 inches.

 

Catagen Phase

There is no significant change to the hair during this phase. Instead, it is a relatively short transitional phase, and usually lasts about 10 days.

 

Telogen Phase

This is known as a resting phase. It is the time during which hair is released, and falls out. It is normal to lose up to 80 hairs every day. Since each hair on your head is at a different stage of the hair growth cycle, you likely won’t notice those lost hairs. However, if you notice more strands in your brush or the shower drain, it’s a sign of abnormal hair loss.

Following the telogen phase, hair follicles remain inactive for about three months. The hair growth cycle then restarts with the anagen phase.

 

If you are concerned about abnormal hair loss, it’s a good idea to contact your physician and determine whether any underlying medical issues are the cause.

At DK International, we understand that hair loss can be a very difficult and stressful experience. We offer a variety of hair replacement and restoration services. Contact us today for a free private consultation at our Minneapolis hair loss salon.

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