In normal conditions of life, temperature and pressure, our heads have between 120,000 and 150,000 hair, almost an 86 sq. ft. surface, and at a rate of 0.4″ per month, the human hair grows rapidly. It is estimated that more than 7.4 miles of hair grow per year in adults. Over a lifetime, about 15 new hair are born in each follicle. However, we lose between 100 and 150 hairs daily. This can be explain by genetic and environmental factors.
When hair loss is related to genetic factors, it is called androgenetic alopecia. This inheritance coupled with hormonal dysfunction is the main cause of hair loss. In a world subject to strong industrialization, hair face several other factors that clearly affect their quality, making them dry, brittle, dull, in contact with water or sunlight. The fact of plaiting the hair, too extreme styling, the overuse of friction products or excessive combing are all factors that may be causing the hair loss.