He Shouwu soak hair wash due to the limited external dose, external use is difficult to play the full efficacy of the drug and other factors, it is generally difficult to achieve the effect of making gray hair to black, He Shouwu external use of the correct use of decoction of water to wash or powdered sprinkled or adjusted to apply. He Shouwu is a kind of traditional Chinese medicine, has the effect of detoxification, elimination of carbuncle, interception of malaria, laxative and laxative, and can be used for the treatment of early whitening of hair and beard, lumbar and knee soreness and weakness (lumbar and knee soreness and weakness), scrofula, prolonged malaria deficiency, rubella, constipation and other diseases. This product can be taken internally by decoction or boiling paste or soaked in wine or into the pill, bulk, external use is generally recommended to decoction water wash, powdered sprinkle or adjust the coating. He Shouwu adverse reactions, contraindications are not yet clear; take the drug should be noted, loose stools and damp phlegm should not be used. If there is any discomfort, it is recommended to consult a traditional Chinese medicine practitioner for standardized treatment under the guidance of evidence-based treatment to avoid delaying the condition.