The hair roots are still in the hair follicles, just like cutting leeks. The color of hair is influenced by many human factors, such as people's mood (temperament, work pressure, mental state, etc. ), some diseases (such as autonomic nervous dysfunction, hyperthyroidism, endocrine disorders), heredity.

If you want to change, you need to adjust your internal environment, establish and maintain healthy attitudes and habits, be open-minded, comfortable and peaceful. Stay healthy. Go to the hospital for physical examination if necessary (such as trace element deficiency, renal function and other hidden dangers, etc.). )