The problem of dandruff is the subject of wide speculation. Dandruff is the excessive shedding of dead skin cells from the scalp. Excessive flaking has some causes and can also be a symptom of seborrheic dermatitis, psoriasis, even fungal infection.On the one hand it is normal for skin cells to fade and flake off on the other hand only a pittance of flaking is normal and in fact quite common. The fact is that the scarfskin continually replaces itself, but normally these flakes of skin are too small to be visible. For people with dandruff, skin cells may replace in 2–7 days (it is in 4 times fleeter than normal skin calls), as opposed to around a month in people without dandruff.
The dandruff causes are not exactly determined and can vary from improper feeding and maldigestion to psychological problems. There are some most common ones:
• Dry skin is the most common cause of itchy, flaking skin. Most of us usually get dry skin during winter because of the cold air and overheated accommodations. Flakes from dry skin are generally smaller and not as oily as from other dandruff causes.
• Irritated, oily skin (seborrheic dermatitis). Seborrheic dermatitis is usually a total skin problem. A person usually has other skin areas rich in oil glands, such as the forehead the sides of the nose and the groin area, and sometimes shoulders and back.
• A yeast-like fungus (malassezia). Malassezia can live on the scalp skin of even most healthy adults without any manifestation. But sometimes it feeds on the oils secreted by your hair follicles. It usually causes more skin cells to grow, as the result the extra skin cells die and fall off as dandruff.
• Irregular washing. If you don't regularly wash your hair or week washing number is not sufficient, dead skin cells from your scalp can become excessive. It is the most superficial problem.
• Psoriasis. This skin disorder causes the double-quick scrubbing of skin cells. This disease usually extends into the open skin area, but it can also affect your scalp.
• Eczema. If you have eczema on your open skin area, it's possible you could develop dandruff on your scalp.
In spite of all the above, the common sensitivity to hair care products can also cause dandruff. If you shampoo your hair too often or make use of too many styling products it may cause your scalp skin excessive oiliness or conversely dryness of the scalp and dermatitis and dandruff as the result.