Graying
Graying phenomenon is the change in the color of the hair , not the subject gets suddenly or once the natural color to gray, and gray hairs is that the size of the colored material in the hair began to fall, and result in the loss of hair to color gradually, until it becomes the color white becomes too much in the head.Among the reasons for the gray hair follicles stop hair on the composition of melanin (the substance responsible for coloring), making the new hair grows without color, or colored substance creatine, (which is the basic material of which consists of hair a substance without color).
Reasons behind the decline of melanin
- The reason for decreased melanin age.
- The reason for decreased melanin psychological feeling of sudden and severe, such as: extreme fear, or sadness severe, or injury worries worshiped a mouse.
- The reason for decreased melanin malnutrition and vitamin deficiency.
- Of the reasons behind the decline of melanin organic diseases such as Dysfunctional gland , thyroid, or a high degree of heat the body, or persistent infections.
- Genetic factors.
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