Alopecia, also known as baldness, usually refers to excessive hair loss from the scalp. Hereditary loss (androgenetic alopecia), which worsens with age, is the most frequent cause. Other causes may be due to hormonal changes (effluvia), secondary to diseases (for example, healing alopecia), side effects of medication or due to some hairstyles (traction alopecia) and capillary aggressions. Some people prefer to let their baldness evolve naturally without any treatment. Others cover it with hairstyles, makeup, hats or scarves. And there is always a large part of the population that chooses the treatments available to prevent hair loss and restore hair growth.
Significant changes in the appearance of hair can seriously affect people's self-esteem. Hair loss can have serious emotional consequences for both men and women.
Hair is not only an aesthetic ally, but also functions as a thermal insulator and protects the head from solar radiation.