Seborrhoea

Sebum is secreted by sebaceous glands, which are particularly voluminous and abundant on the scalp.

The physiological secretion of sebum is necessary for beautiful hair. We see that hair is oily when sebum is secreted in excess, and it impregnates all hair shafts by capillarity.
 
Seborrhoea can have 2 types of causes:
An external cause, such as the regular wearing of a helmet or excessive sweating
Or an androgenic hormonal problem

The sebum secretion process is hormonal dependent.
By inhibiting the enzyme affecting sebogenesis, it is possible to regulate sebaceous gland activity.

KLORANE nettle extract

This perennial is entirely covered in urticant hairs. Its roots grow from a creeping, underground stem, which produces new shoots every year. An extract is obtained using a hydro-alcoholic solution. This extract contains polycyclic compounds, which have an effect on the enzyme influencing sebogenesis, and as a result is able to regulate sebaceous gland activity.

The natural colour of our hair is determined by the abundance, size and distribution of melanin grains. Melanin is a natural pigment produced by the hair bulb. During hair growth, melanin is attached to the keratin in the cortex of the hair shaft. Melanin is made up of two types of pigment:
 
- eumelanin, or granular pigments, the cause of dark shades of hair and ashen highlights
- pheomelanin, or diffuse pigments, the cause of lighter shades and golden or red highlights
The mix of these two pigments (eumelanin and pheomelanin ), their abundance and the manner in which they are distributed within the cortex can result in any one of a great variety of hair shades.

The different types of hair colouring and their effects on the hair

Permanent oxidation hair colour
This type of hair colouring involves the OXIDATION of hair melanin: the natural melanin pigment is solubilized and a new coloured pigment is combined with the keratin. Oxidation also damages keratin hydrogen bonds and disulphide bridges. This leads to greater hair shaft fragility.
 
Temporary hair colour
Temporary hair colouring is the least aggressive for hair. The colouring pigments used have a low affinity with keratin (their size is designed to prevent hair shaft penetration) and they bond superficially to the cuticle, a little like make-up. They come off after just a few washes.  

Permanent hair colour, changing hair’s properties

Colour-treated hair, further damaged from day to day
 
Colour-treated hair is further damaged by everyday actions and living conditions, which contribute to colour discharge, increase hair degradation and faded and dull hair colour.

Enemy no. 1: detergent. Who hasn’t seen coloured water disappearing down the drain when washing hair for the first time after changing hair colour, as if the colour is disappearing with it? This discharge phenomenon is caused by a detergent action that is too strong. With successive washes, such a strong detergent action can strip the hair of its colour, which gradually fades and becomes dull.

Enemy no. 2: UV rays. The sun weakens and dulls the hair. Solar rays also trigger the formation of free radicals. What’s more, UV rays damage hair scales, which lift up and can no longer reflect the light; this is why hair loses its radiance.
 
Enemy no. 3: water. Water swells the hair fibre and encourages the discharge of pigments. Hard water is one of the main causes of dull hair. The calcium contained in water is deposited on the hair shaft and damages the hair cuticle.

The formation of dandruff

The formation of dandruff
The scalp is made up of different cell layers one on top of the other. One such layer is the stratum corneum, which forms a natural protective barrier. This barrier is made up of cells, called corneocytes, joined together by a cement rich in lipids, called intercorneocyte cement.

On a healthy scalp, corneocyte desquamation is an invisible process because the cells released are extremely small.

On a scalp with dandruff, the desquamation of skin cells is visible because the cells are larger.

Dandruff can be caused by:

Accelerated cell renewal combined with scalp dehydration and the structural modification of the intercorneocyte cement.
Corneocytes are eliminated in the form of visible dandruff

Excessive Pityrosporum ovale (yeast) proliferation
Cause of itching and irritation

Dry dandruff?  
Dry dandruff is characterized by small, lightweight, white flakes that come away easily from the scalp.
 
Oily dandruff?
Oily dandruff adheres to the scalp and is a frequent cause of itching.
 
Severe cases:
Causes:
Excessive Pityrosporum ovale proliferation
Structural modification of intercorneocyte cement
And in most cases, excessive sebum secretion
Characterized by:
Excessive desquamation of the scalp
Severe itching and irritation
Scales adhering to the scalp

Aggravating factors:

KLORANE Laboratories anti-dandruff range offers solutions tailored to different types of dandruff (take our Hair diagnosis quiz to find out what type of dandruff you have).  
 
Severe cases of dandruff:
Initial treatment:
Anti-dandruff shampoo with red thyme from Spain
Severe cases of dandruff
Severe itching and irritation
One month of treatment, 2 or 3 applications per week
Anti-recurrence:
No-rinse anti-dandruff solution with red thyme from Spain  
Prevents the return of dandruff
Soothes itching
Alternate with shampoo
Mild dandruff:

Oily dandruff:
Anti-dandruff treatment shampoo with myrtle extract
Eliminates oily dandruff stuck to the scalp
2 or 3 applications per week

Dry dandruff:
Anti-dandruff treatment shampoo with nasturtium extract
Rapid elimination of dry dandruff
Purifies the scalp
2 or 3 applications per week

Follow-up treatment:
Soothing shampoo with peony extract
Alternate with anti-dandruff shampoo
Soothes irritated scalps
Calms itching
2 or 3 applications per week 

Klorane camomile: background and tradition

Native to Mediterranean regions, camomile is a large and very aromatic annual that has been used since ancient times.
Matricaria recutita L. is a particular variety of camomile that has been selected by Klorane Laboratories for over 40 years for its particularly high concentration of natural pigments, which attach themselves to the scales of the hair without penetrating to its core.

It lightens blond hair and brings out extremely natural highlights in light brown hair. Born of Klorane Laboratories’ expertise, the new camomile shampoo, brightening cream conditioner and sheen-enhancer vinegar finishing rinse together form a valuable hair care programme suited to all types of natural, streaked or colour-treated blond hair.
Matricaria recutita L. camomile also has softening properties, and boosts radiance and shine without damaging the hair in any way at all. In addition, it can be used by all members of the family, even children.

Klorane camomile hair care naturally lightens your blond hair

Shampoo with camomile
Blond to light brown hair
Specially formulated for natural, streaked or colour-treated blond hair, the golden and fluid texture of Shampoo with Matricaria recutita L. camomile gently cleans and lightens hair and leaves it delicately perfumed.
Results: Hair is soft, supple and manageable. It is luminous and shiny with radiant golden highlights.


Brightening cream conditioner with camomile
Dry and damaged blond hair
Ideal for dry and damaged blond hair, Brightening cream conditioner with Matricaria recutita L. camomile lightens, repairs, detangles and nourishes the hair without weighing it down. With its high concentration of conditioning agents and pearly, creamy and delicately fragranced texture, it repairs the hair deep down to leave it soft and bouncy.
Results: Once repaired, hair feels silky and supple to the touch and is beautifully shiny.   Sheen-enhancer vinegar finishing rinse with camomile

Dull blond hair

Based on a traditional recipe, Klorane Sheen-enhancer vinegar finishing rinse is rich in Matricaria recutita L. camomile to lighten the hair and boost radiance. Used pure or diluted, it closes hair scales and removes hard-water residue for unparalleled hair radiance and shine.
Results: Hair is easily detangled, supple, beautifully radiant and wonderfully shiny. For hair as blond as that of a child!

The Matricaria recutita L. camomile range

proven effectiveness on blond hair
In order to assess the efficacy of their camomile extract, Klorane Laboratories carried out a study to measure hair shine after use, using cross-polarized photography.
Hair shine had significantly increased in 70% of the women who had used the camomile extract range.
 
The Klorane hair care with camomile program: Proven results