Normal hair loss and abnormal

Baldness "normal"

The hair is like a forest: the hair grows, lives and dies. Hair loss is usually dead replaced by new hair. Note that hair loss of less than 50-100 hairs per day can be normal.

The abnormal hair loss

In some cases, hair loss exceeds 50 to 100 hairs a day and consider it a disease of hair loss (alopecia for example).