He Shou Wu Serum has limited effect on gray hair, if you need to treat gray hair, the correct way to use is to decoct water of He Shou Wu for external use or internal use. He Shouwu is a kind of Chinese herbal medicine, has the effect of black hair, benefit kidney and blood, dispel wind and tonify the liver, etc. It is commonly used in the treatment of gray hair, deficiency of the liver and kidney, lumbar and knee soreness and weakness (lumbar and knee soreness and weakness of feeling), etc. For the treatment of gray hair, usually decoction is used for external washing of the hair or internal intake, and the essence of He Shouwu is a kind of chemical product, which has the limited active ingredients of He Shouwu, so it has a limited effect on the gray hair. It should be noted that when applying He Shouwu patients should pay attention to a light diet, avoid eating fat, sweet and spicy food; stool diarrhea or phlegm-dampness should not be applied. If the patient has a need for medication, must be in a professional physician clear disease identification after the application, not blindly applied, so as not to lead to adverse consequences.