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General Hair Growth Cycle

General Hair Growth Cycle

It is important to understand the general hair growth cycle to find out why hair loss occurs.

Hair Structure

Hair is composed of strong structural protein called keratin. This is the same kind of protein that makes up the nails and the outer layer of skin. In addition, Water, lipids, pigments and trace elements are also essential components of composition of hair.

The structure of the hair follicle is divided into three main parts: Papilla, Hair fiber, and Root sheath. The papillae is made up mainly of connective tissue and a capillary loop which nourishes all hair follicles and bring nutrition and oxygen, so nutrient-rich blood flow will develop and maintain healthy hair. Please check our Hair Loss Solution  phase to see how we can supply you appropriate nutrition to your hair, find the best ways to stop hair loss and regrow hair.


The Hair Growth Cycle

Hair follicles grow in repeated cycles. One cycle can be broken down into three phases which include Anagen (Growth Phase), Catagen (Transitional Phase), and Telogen (Resting Phase). Once the cycle is complete, it restarts and a new strand of hair begins to form. The speed of hair growth is about 0.5 inches per month. Normally, we lose approximately 50-100 hairs a day.

Anagen Phase: This is a very important phase also known as growth phase. It begins in papilla and hair is actively growing from the scalp. This phase can last 2 years up to 6 years; this is the normal lifespan of each hair. About 85%- 90% of the hairs on one's head are in the anagen phase at a given time. The longer the hair stays in the anagen phase, the faster and longer it will grow, otherwise the hair grows shorter, slower and thinner.

Catagen Phase: Also known as the transitional phase which may last about 1 to 2 weeks. During this time, the hair follicle shrinks to 1/6 of its original length due to disintegration and the papilla detaches and "rests", cutting the hair strand off from its nourishing blood supply. Hair is no longer actively growing.

Telogen Phase: This is the last and resting phase of human hair. At any given time, 10-15% of hair is in this phase, which can last about at least 5 to 6 weeks. In this phase the hair is just sitting on your scalp and basically waiting to fall out. Since hair dies at the root, a new one is waiting to take its place.

Return to Anagen phase: The anagen phase begins again once the telogen phase is complete and a new, healthy hair begins to grow in the position, repeat the entire cycle.

Tips: The reason many hair loss treatments cause temporary increased hair loss, is because that in order to trigger hair to the Anagen Phase, they must go through the Telogen Phase quickly and then start staying in Anagen Phase, which is the time with the healthier, stronger and beautiful hair.

Author: Mores Shane