Take more protein and vitamins, and eat more black sesame seeds, walnuts, sunflower seeds and animal livers. These foods are rich in pantothenic acid, which can accelerate the synthesis of black particles and promote hair follicles to grow black hair. Massage the scalp more. After getting up in the morning, before going to bed, draw a small circle on the scalp with your forefinger and middle finger, massage for 1 ~ 2 minutes each time, and massage back and forth for 30 ~ 40 times per minute, and then gradually increase it to 5 ~ 10 minutes. This massage can accelerate the local blood circulation of hair follicles and make the papilla get sufficient blood supply. In this way, the nutrition of pigment cells in the hair bulb is improved, the cell activity is enhanced and the division is accelerated, which will be beneficial to the secretion of melanin and the blackening of hair.