Quebec's Hair Transplant Institute - An EFFECTIVE SOLUTION to your HAIR LOSS problem!
What You Should Know About Hair
Clic to Enlarge
They are two types of hair: terminal hair and vellus hair
Baldness first sets in with the onset of vellus hairs that are characterized by a longer telogen phase (rest phase) and a shorter anagen phase (growth phase). Vellus hairs are thinner and grow more slowly. Terminal hairs stand for normal and healthy hair.
The Growth Cycle of Hair
The growth cycle of hair and body hair is divided in three phases: the anagen phase, the catagen phase and the telogen phase. Normal hair on a given head is made up of 100K (100 000) to 150K (150 000) individual hairs and a loss of 20 to 75 hairs per day is considered normal.
The active growth cycle of an hair, called the anagen phase, lasts for three year. At any given time, about 85% of hairs are in this phase. Hairs normally grow about one centimetre a month in this phase.
The catagen phase is a transitional phase between the anagen phase and the telogen phase. At this step, cellular multiplication stops in the hair matrix and the hair can be considered dead. At any given time, about 3% of hairs are in this phase.
The telogen phase is the last phase of the cycle. The dead hair remains on the head. This is the rest phase of the follicle before the hair falls. It last for about 100 days. At any given time, between 10 to 15% of hairs are in this phase.
