You should eat more foods that nourish blood and kidney, such as black sesame, black beans, black dates and black fungus. Lack of vitamin B is another important factor causing baldness, so the intake of this kind of food should be increased. Foods containing more vitamin B include cereals, beans, dried fruits, liver, heart, kidney, milk, eggs, green leafy vegetables and so on. After the hair turns white, it can be conditioned with traditional Chinese medicine, which can be used to condition and turn white hair into black hair. When cooking soup at home, you can put some Chinese herbal medicines, such as Fructus Corni, Polygoni Multiflori Radix, Radix Rehmanniae Preparata, Walnut, Ganoderma lucidum, Fructus Lycii, Fructus Ligustri Lucidi, Ruby, Radix Asparagi, Rhizoma Polygonati and Radix Angelicae Sinensis, or soak Semen Sesami Niger or Polygoni Multiflori Radix in water. Polygonum multiflorum Thunb. is 20-30g per day. If it is hot and dry, angelica is generally not used. Soaking chrysanthemum tea and eating walnuts at ordinary times can clear the liver and improve eyesight, which is good for turning white hair black. Relaxation is very important. If you are too nervous and anxious for a certain period of time, it will lead to an increase in the release of catecholamine in the brain and a decrease in tyrosinase activity, thus affecting the metabolism of melanin and reducing the synthesis of melanin in hair. Don't sleep with your head wet. It is important to prevent hair from turning white prematurely and wash it properly. Wash your hair regularly, usually 1~2 times a week, and increase the number in summer. Water should be soft water with less minerals and no irritation to hair, and the water temperature should be close to body temperature. After washing your hair, wet hair can't sleep well, and it is easy to catch cold, which leads to premature gray hair. Walking in the sun should be protected. Avoid strong sunlight or dry and windy hair degeneration. The ultraviolet intensity of the sun in Guangdong is strong, and it is strongest from 10 to 4 pm, as well as in autumn and winter. Ultraviolet rays will destroy the chemical structure in hair, destroy the elasticity of hair, and make hair dry and fade. Don't let your hair bask in the sun too much, especially in the dry season of autumn and winter, pay attention to the moisturizing of your head. Anti-ultraviolet hair care products will have certain effects.