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On average, a hair strand's life span is five and a half years.
On average, a human scalp has 100,000 hairs.
Next to bone marrow, hair is the fastest growing tissue in the human body.
Hair will fall out faster in case of an unbalanced diet, lacking the vitamins and minerals.
Each hair consists of 3 layers: the cuticle, cortex, and medulla.
Hair is made of keratin, the same substance that forms nails and the barrier at the top of the skin.
Water content in your hair can reach 30%.
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