The Hair Growth Cycle

| August 11, 2010 | 0 Comments

Hair starts growing from birth and keeps doing so till old age. It is one of the most hard-working parts of your skin, as it grows throughout your life and hardly gets a break.

Each hair follicle basically goes through three cycles around 20 times in your life. These hair growth cycles or phases are known as: Anagen, Catagen, and Telogen. Here are the details of these phases.

The Anagen Phase

This is the initial phase of the hair growth cycle. It is also called the growing phase. At any given time, 80 to 90 percent of the hair follicles on your scalp are going through the Anagen phase.

Characteristics of the Anagen Phase

During the Anagen phase your hair grows continuously at a rate of ½ inch per month. The hair will continue growing for three to seven years. The blood supply provides nutrients and minerals to your hair and they look thick and nourished. The hair bulb is responsible for the color of your hair and is active during the Anagen phase.

The Catagen Phase

The Catagen phase starts with the conclusion of the Anagen phase. In this stage, the hair is in transitional phase before it goes to rest. It is a short phase and lasts for two to four weeks.

Characteristics of the Catagen Phase

During the Catagen phase, your hair detaches from the blood supply. The detached follicle slowly shrinks to about 1/6th its size. The hair bulb, which was active during the Anagen phase, stops producing the color pigment. The bulb is pushed upwards towards the surface with the formation of new hair. Approximately two to three percent of hair in your scalp is in the Catagen phase at any given time.

The Telogen Phase

This is the last phase of the hair growth cycle. It is also called the resting phase. In the Telogen phase, your hair follicles will gradually fall off and be replaced by new hair.

Characteristics of the Telogen Phase

At any time, around 10 to 15 percent of the hair in your scalp is in the Telogen phase. You will lose 50 to 100 hairs every day during this phase. Telogen lasts for three months before the hair falls out. Your hair follicles become thin and weak during this period and can be easily pulled out. Once a hair falls, a new hair follicle will take its place.

These are three stages of the hair growth cycle.

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