where does dandruff come from?

Question

i want to know

i also don't have any dandruff

Answer 1

Its skin cells from the scalp

Answer 2

Dandruff is essentially dry skin on your scalp (head). However, there are different types of dandruff - different causes for the dry skin, which is why some people have a more difficult time controlling their dandruff and why there are many different shampoos and medications for dandruff. Please see the following link to the Mayo Clinic for more information.

Answer 3

I comes from dry skin on the scalp. When the skin dries it flakes and then you get what they call dandruff.

Answer 4

It's a fungus that grows on the head which should not be confused with dry scalp which just causes skin on the scalp to become flaky and white

Answer 5

Dandruff (also called scurf and historically termed Pityriasis capitis) is due to the excessive shedding of dead skin cells from the scalp. As it is normal for skin cells to die and flake off, a small amount of flaking is normal and in fact quite common. Some people, however, either chronically or as a result of certain triggers, experience an unusually large amount of flaking, which can also be accompanied by redness and irritation. Most cases of dandruff can be easily treated with specialized shampoos.

Excessive flaking can also be a symptom of seborrhoeic dermatitis, psoriasis, fungal infection or excoriation associated with infestation of head lice. Dandruff is a global phenomenon and many people find that dandruff can cause social or self-esteem problems. Treatment can be important for purely social reasons. As the epidermal layer continually replaces itself, cells are pushed outward where they eventually die and flake off. In most people, these flakes of skin are too small to be visible. However, certain conditions cause cell turnover to be unusually rapid, especially in the scalp. For people with dandruff, skin cells may mature and be shed in 2 - 7 days, as opposed to around a month in people without dandruff. The result is that dead skin cells are shed in large, oily clumps, which appear as white or grayish patches on the scalp and clothes.

Dandruff has been shown to be the result of three required factors: 1) Skin oil commonly referred to as sebum or sebaceous secretions; 2) the metabolic by-products of skin micro-organisms (most specifically Malassezia yeasts); and 3) an individual susceptibility. Rarely dandruff can be a manifestation of an allergic reaction to chemicals in Hair Gels/Sprays,HairOils and sometimes even dandruff medications like Ketoconazole. Common older literature cites the fungus Malassezia furfur (previously known as Pityrosporum ovale) as the cause of dandruff. Whilst this fungus is found naturally on the skin surface of both healthy people and those with dandruff it has recently been shown that a scalp specific fungus Malassezi Globosa is the responsible agent. This fungus metabolizes triglycerides present in sebum by the expression of lipase, resulting in a lipid byproduct oleic acid (OA). Penetration by OA of the top layer of the epidermis, the stratum corneum, results in an inflammatory response which disturbs homeostasis and results in erratic cleavage of straum corneum cells. There is no convincing evidence that food, excessive perspiration or climate have any role in the pathogenesis of dandruff.

There have been many strategies for the control of dandruff. Simply increasing shampooing will remove flakes. However, elimination of the fungus results in dramatic improvement. Regular shampooing with an anti-fungal product will not only treat but prevent recurrence.

Flaking is a symptom of seborrheic dermatitis. Joseph Bark notes that "Redness and itching is actually seborrheic dermatitis, and it frequently occurs around the folds of the nose and the eyebrow areas, not just the scalp." Dry, thick, well-defined lesions consisting of large, silvery scales may be traced to the less common psoriasis of the scalp.

Seasonal changes, stress, and immuno-suppression seem to affect seborrheic dermatitis. Simple dandruff does not cause hair loss.


[edit] Treatment
Head & Shoulders anti-dandruff shampoo containing active ingredient Zinc pyrithione.
Nizoral Shampoo anti-fungal/anti-dandruff shampoo containing active ingredient Ketoconazole.
Selsun Blue anti-dandruff shampoo containing active ingredient Selenium sulfide.
The antifungal properties of Tea Tree Oil (Melaleuca Oil) have been reported as useful in the treatment of dandruff. [1] [2] [3]
Severe forms of flaking if accompanied by flaking or scaling on other parts of the body, might best be treated by a dermatologist.

[edit] Misconceptions
Dandruff is sometimes confused with dried shampoo. This usually occurs when hair isn't rinsed properly.
Dandruff is not an organism like lice; it is just dead skin that accumulates in the scalp.
Dandruff is unlikely to be the cause of hair loss.

Answer 6

a dry scalp

Answer 7

dandruff comes from a dry scalp or from not washing your hair well............................................. try to wash your hair more often if it happens or has happened to you! stay washed!