Dandruff is caused by micro-organism called pityrosporum-ovle which are present in every body's scalp. Symptoms of dandruff get aggravated when exposed to dust, UV light, harsh chemical based shampoo, hair dyes etc., this results in increase in number of microbes which causes unhealthy residue over the scalp which leads to dandruff, which is the cause of unhealthy scalp results in unhealthy, lifeless hair and may result in excessive loss of hair too.
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