Mostly related to deficiency of kidney essence, deficiency of qi and blood, clinically considered as zinc deficiency, lack of trace elements and nutrients. In traditional Chinese medicine, hair is the remainder of blood, and the kidney’s flower is in the hair. Insufficient essence and blood of the kidneys, insufficient qi and blood can not provide sufficient nutrition for the hair, which will lead to slow growth and dryness of the hair. Avoid overworking and staying up late, because overworking and staying up late can easily hurt the body’s qi and blood. You can take some foods with blood and Qi such as black sesame, red dates, he shou wu, lean meat, pig liver, spinach, cinnamon, brown sugar, red peanut rice, astragalus angelica stewed chicken, pigeon soup. You can also take some medicines, such as He Shou Wu tablets, hair growth and wu hair capsule, benefit qi and blood oral liquid.