Hair Guide


Hair and Scalp Disorders

How does hair grow and at what pace?

Hair grows through the root, which is directly linked to the rest of the body via the bloodstream.

In order for the hair to grow normally, the roots need a constant input of oxygen, proteins, minerals and vitamins, all of which are provided through the blood vessels.
A healthy diet is thus the first condition for good hair growth, but it is not the only one; other factors come into play.

The rate or speed of hair growth is about 1.25 centimetres or 0.5 inches per month, or about 15 centimetres or 6 inches per year.
The maximum length varies from one individual to another: it depends on the hair's growing pace but also of its life length (which is on average 2 to 6 years).

My Hair isn't growing!

A recurring complaint, often heard at Link Hair Care. If the hair does not grow back well or falls too much and especially if it is thinning out at the same time, it is a complex issue that should be look into. We would advise to consult our trichologists for proper diagnosis.

What is the normal rate of daily hair loss?

It is difficult to fix an average number to determine the amount of hair to lose on a daily basis. Each person's hair is unique and too many variable factors come into consideration. However, here are some help in understanding what hair fall you should expect and what is more.


The hair follows a hair life cycle. When a hair dies, another new hair replaces it and makes the old hair fall. It is therefore normal that you lose some hair everyday. In a normal hair life cycle, there should be 10-15% of telogen hairs (i.e., hair that is ready to fall) on one's head. But how much hair can we thus lose, for physiological reasons, on a daily basis? Here is where it is impossible to fix an average number: it can easily double from one person to another.

Causes for Variation

  • Anagen hair: how long is your anagen phase (the phase in which your hair is growing). The span at which the hair remains in this stage of growth is determined by genetics. It lasts anywhere from 2 to 5 years and as much as 85% of our hair is usually in this phase. Some people cannot grow the hair past shoulder length, others can grow their hair down to their ankles. The length of your anagen cycle limits the length to which you could grow your hair.
  • Your hair’s natural density per square centimeter that you were genetically granted at birth. The higher it is, the more hair will fall naturally, every day: that is the second variable. And, given that from one person to another, this density can vary from 180 to 320 hairs, it is difficult to establish an average.
  • Morphology is the third variable to take into account. The size of the head, the way the hair is implanted (low or high, at forehead or at nape level) are as many factors that determine the scalp’s total surface, and therefore the number of hairs, no matter how many there are per square centimeter. In other words, it can be some women’s norm to lose from 20 to 25 hairs a day, while others’ with denser hair and a fast hair cycle can lose up to 70 or 80, even 100, with it remaining normal.

Trichologists can distinguish between hair loss and the normal hair shedding

If you are concerned by the amount of hair falling out, you don’t need to suffer in silence. You can turn to a us for help.
A trichologist can find the cause or causes and tell you what you can expect. Effective treatments options are available for many types of hair loss. The sooner treatment begins, the better the prognosis.

Hair grows from a single follicle - an indentation in the skin. Each hair follicle has its own blood, nerve and muscle supply. You’re born with a specific number of follicles, which can’t be changed, and the size of your hair follicle determines the thickness of your hairs.

At the base of your follicle, lying on the dermis (the deeper layer of your skin), is the papilla – the bud of hair where most growth takes place. The nerves and muscles surrounding your follicles give your hair its tactile properties, allowing you to feel the slightest movement. It’s these muscles that contract and give you ‘goose bumps’ when you’re cold or threatened. A scared cat or porcupine are exaggerated examples of this response.

The blood vessels that surround your follicles carry the nourishment your hair needs to grow. This is one of the reasons why your diet is so important for healthy hair growth and strength.
The three stages of hair growth are the anagen, catagen, and telogen phases. Each strand of hair on the human body is at its own stage of development. Once the cycle is complete, it restarts and a new strand of hair begins to form.

Anagen phase
The anagen phase is known as the growth phase. It begins in the papilla and can last from two to six years.The span at which the hair remains in this stage of growth is determined by genetics. The longer the hair stays in the anagen phase, the longer it will grow. During this phase, the cells in the papilla divide to produce new hair fibers, and the follicle buries itself into the dermal layer of the skin to nourish the strand. About 85% of the hairs on one's head are in the anagen phase at any given time.

Catagen phase
Signals sent out by the body determine when the anagen phase ends and the catagen phase begins. The catagen phase, also known as the transitional phase, allows the follicle to, in a sense, renew itself. During this time, which lasts about two weeks, the hair follicle shrinks due to disintegration and the papilla detaches and "rests," cutting the hair strand off from its nourishing blood supply. Ultimately, the follicle is 1/6 its original length, causing the hair shaft to be pushed upward. While hair is not growing during this phase, the length of the terminal fibers increase when the follicle pushes them upward.

Telogen phase
During the telogen, or resting, phase the follicle remains dormant anywhere from 1–4 months. 10 to 15% percent of the hairs on one's head are in this phase of growth at any given time. In this phase the epidermal cells lining the follicle channel continue to grow as normal and may accumulate around the base of the hair, temporarily anchoring it in place and preserving the hair for its natural purpose without taxing the body's resources needed during the growth phase.
At some point, the follicle will begin to grow again, softening the anchor point of the shaft initially. The hair base will break free from the root and the hair will be shed. Within two weeks the new hair shaft will begin to emerge.
The anagen phase begins again once the telogen phase is complete. The process results in normal hair loss known as shedding.

Types of Hair Loss


Types of Scalp Disorders


Types of Hair Shaft Disorders