If you want to fight hair loss it is a good start to understand the basics of hair growth. In this article you will learn how hair growth works, and how you can divide hair growth into three different phases: the anagen phase, the catagen phase and the telogen phase.

Anagen phase
This phase is also called the active phase of the hair. During this phase the new hairs will start to grow. Your hair grows about a half cm per month. The hair grows faster in the summer than in the winter. The growth phase, or anagen phase lasts about two to five years. A hair with the full-length after that time is then 18 to 30 cm. The longest growth phase is known, was seven years in which the hair growth by up to one meter long.

Catagen phase
At the end of the growth phase the hair will switch to a transitional phase. This phase is called the Catagen phase. The Catagen phase will last for about two to three weeks. At that time the hair follicle is preparing for the resting phase. Approximately one or two procents of your hair is in the intermediate stage. During this phase, the hairs stop growing and the hair follicle shrinks to about 1/6 of its original length.

Telogen phase
After the transitional phase follows the resting phase. This phase will last for an average period of five to six weeks. During this stage hair won’t grow anymore, but remains connected to the follicle. The follicle is completely at rest. During this phase hair gains a thin appearance. Approximately thirteen procents of your hair is simultaneously in the Telogen stage. At the end of this phase the earlier hair falls out and the newly formed hair seeks its way to the skin surface. About twenty five to hundred telogen hairs are shed normally each day.

On average the hair growth cycle repeats itself around 20 times during a person’s life.

Hair loss in relation to the hair growth cycle
In case of hair loss, hair thinning or other problems with hair growth the growth cycle is disturbed. This may be caused by hormonal changes, medication, improper nutrition or illness.

Minoxidil hairloss