
Dandruff is caused by a fungus Malasseziaglobosa.
The fungus lives and feeds on human scalp causing itching and flaking.
The fungus feeds on sebum, the oily product produced by the sebaceous glands.
The fungus has no ability to manufacture its own fatty acids,
so relies on human sebum for its source.
Sebum acts to protect and waterproof hair and skin, and keep them from becoming dry, brittle and cracked. Dandruff causes excessive flaking of
skin from scalp. Itching from dry or greasy scaling varies.

* Over-shampooing
* Improper drying of hair after wash
* Allergic reactions to hair products.
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