Constitute The hair follicle is a sheath-like structure around the hair root, which consists of inner hair root sheath, outer hair root sheath and fibrous sheath from inside to outside. 1. Inner hair root sheath The inner hair root sheath originates from the epidermis and is divided into three layers from inside to outside, namely sheath skin, Huxley layer and Henler layer. The sheath skin, also known as the sheath cuticle, is a layer of overlapping cells; the Huxley layer is composed of 1-3 layers of cells; and the Henler layer is composed of flat cells arranged in a single row. 2. Outer hair root sheath The outer hair root sheath originates from the epidermis and consists of one or more layers of cells. The outer layer is rectangular columnar epithelial cells. 3. The fibrous sheath The fibrous sheath originates from dermis and can be divided into three layers. The inner layer is a transparent glass-like film. The middle layer is composed of dense and ...
Hair loss due to health problems 1. Anemia Iron deficiency can lead to anemia, red blood cells are reduced, blood oxygen levels in the scalp are also reduced, hair follicles are in a "hungry" state, eventually leading to hair loss slowly, scalp increasingly apparent. It is recommended to drink juice and eat iron-rich foods to restore hair growth. 2. Eating disorders Reducing food intake will lead to a decrease in scalp blood flow, which will affect the normal growth of hair, and in serious cases will lead to loss of luster or even hair loss. Experts say that maintaining a balanced diet and taking in more protein . 3. Stress syndrome When the pressure is high, the body releases of many hormones will affect the absorption of B vitamins and the deposition of hair pigments. Stress syndrome can lead to baldness when the immune system mistakenly attacks scalp cells, causing hair to fall off. Expert advice: try to sleep at least 6 hours a ...