Hair Growth Cycle

The human scalp holds an average 110,000 hair follicles which are growing and falling in a constant cycle. The cycle contains of three stages.

Anagen Phase

During this phase cells in the root of the hair divide to add to the hair shaft. Depending on your genetics, the growth phase can last anywhere from 2 to 6 years. The hair grows about a fourth of an inch each month, and though it is technically dead, a healthy hair care regimen can keep it looking beautiful while it’s in the Anagen phase.

Catagen Phase

The Catagen Phase follows the Anagen phase and is made up of a 2-3 week transitional period in which the hair is no longer growing. During this stage, a club hair is formed. A club hair occurs when the section of the hair follicle attaches to the hair shaft, cutting the follicle off from its blood supply and the cells that produce new hair. This club hair leads to the next stage of the hair growth and shedding cycle.

Telogen Phase

The final stage of the hair growth and shedding cycle is the Telogen or resting phase. During this two to four month phase, the hair begins to shed at normal levels, and the Anagen phase begins again producing new hair.

At any given time, 85% of hair is growing, and the remainder is resting. Because resting hairs regularly fall out, most people shed about 50-100 strands every day.

The off-balance between the ratio of the growing hair to the falling hair directs to hair loss, thin edges and baldness.

–  40% of men will have noticeable hair loss (alopecia) by age 35. This number reaches 65% by 60 years of age.
–  Women are also deeply impacted by such process: 50 to 75% suffer noticeable hair loss by age 65.