The human scalp has between 100.000 and 350.000 hair follicles. These hair follicles undergo cyclical phases of growth and rest. Normally, we loose about 50-100 hairs daily.

Hair loss or baldness is referred to as alopecia. It becomes if fewer hairs are produced after the old ones are shed.

By the age of 40 or so, the rate of hair growth slows down.

There are several types of hair loss, often classified by whether the loss is localized, or if the hair loss is patchy or affects the entire scalp or if it affects large areas.

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