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The Scalp
Disturbances to this sensitive system will cause modifications in the quality and the quantity of the hydrolipidic film and can simultaneously induce alterations in the microbial balance of the scalp, leading to an exaggerated proliferation of microbes.
To this change the scalp can react in different ways from one person to another and in fact not necessarily all scalps will produce dandruff. Our experience shows that there are some scalps, dry or greasy, with dandruff and also dry or greasy scalps without dandruff.
It is the proliferation of a specific micro-organism, “Pitysporum Ovalis” a type of fat loving yeast, which is at the origin of dandruff formation. It is the reaction of the individual scalp to the excessive presence of Pitysporum Ovalis which is the predominant factor in dandruff formation and not merely the presence of this bacterium.
The Process of Dandruff Formation
Excessive scalp desquamation is the result of a strong self defense reaction of the scalp metabolism in response to non controlled proliferation of specific micro-organisms.
A weakening of the scalps natural immune functions, whether general or cutaneous, provokes an imbalance in the natural microbic flora.
Micro-organisms find and ideal breeding ground and begin multiplying excessively. This can source itching, irritation, redness and other inflammatory conditions.
This whole process can then trigger an acceleration of the cellular reproduction, hence an increased desquamation, which is at the origin of dandruff.
As dandruff appears the scalps unbalance is maintained as is dandruff formation. It is a real vicious circle.
The speed at which the cells can divide and move from the basal layer can be as little as 3 days.
This process normally takes 28 days, during which time ceramides are attached to the cells. The ceramides make the epidermis supple just before the natural shedding of the thin corneal layer.
If the cells move to the surface in just a few days there is not enough time for ceramides to attach, leaving the epidermis dehydrated and then building up a thicker corneal layer.