1. Black beans
Black beans can nourish kidney and hair, and a variety of vitamins and minerals with hair growth function can turn white hair into black hair. Scientists have analyzed that eating too much raw black beans is easy to cause flatulence in the gastrointestinal tract, which makes the workload of digestion, absorption and decomposition of the stomach very heavy. If you eat too much raw black beans, it will cause bloating, diarrhea and even vomiting. If you like to swallow it directly for convenience, it is enough to eat 7 capsules every morning. If it's not too much trouble, you can make some black bean soup like mung bean soup. The time of digestion and absorption of liquid black beans is definitely shorter than that of solid ones.
2. Macroalgae
Kelp contains iodine and other marine minerals that the human body needs to supplement every day, which is an important substance to protect the scalp with luster and hair color. If you want your hair to be black, bright and shiny, you need a lot of iodine-containing marine food. The most common are kelp and seaweed. After being digested and absorbed, they can promote the activity of human thyroid. When the thyroid gland is active, it will secrete some hair growth hormones, and the damaged hair will be nourished, and black hair will grow again at the place where the hair is lost.
3. Black sesame
It has been mentioned in medical books since ancient times that black sesame has magical effects of preventing hair loss and resisting aging. Black sesame can accelerate the metabolism of blood cells on the scalp surface, make blood circulate regularly in the brain, promote the rapid growth of hair and skin, and make new hair shiny and hard, and will not easily turn yellow into fine forks. The pulp made of black sesame and honey can nourish and moisten scalp hair. Regular consumption of black sesame seeds can improve brittle, broken and split hair.