All mammals have hair, but humans are somewhat different from most animals in that we have rather less hair. Hair has several useful functions in the animal kingdom. Hair on the head, also called the scalp, serves a dual function: it protects against the sun's harmful rays and it cools the head by aiding the evaporation of sweat. In humans, especially women, the scalp hair is viewed as the natural ornament or the crowning glory. Some observers believe it also exhibits and individual's heath status.
Dandruff is a common condition of men and owmen of all ages. It is caused by numerous factors, such as hormonal imbalance, mental stress and seasonal variations. Another factor is microbial infection resulting from species such as Pityrosporum, Propionibacterium, Staphylococcus, Epidermophyton and Candida.
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