The water boiled by the leaves of cypress has some therapeutic effect on the premature whitening of beard and hair. Side of cypress leaves have the effect of cooling blood and stopping bleeding, resolving phlegm and cough, hair growth and hair, the main treatment of blood fever, vomiting blood, epistaxis, hemoptysis, blood in the stool, leakage (excessive menstrual flow or more than a few drops of blood) bleeding and other hemorrhagic conditions, but also can be used for lung-heat cough, blood-heat alopecia, premature whitening of the beard and so on. The leaves of cypress are mainly used in decoction for internal use, but also can be used for decoction and washing, or mashed compress, or powdered compress. The water boiled with the leaves of cyperus rotundus has a certain effect on premature whitening of hair, but it should be used with evidence. The adverse reactions and contraindications of this drug are not clear. The therapeutic effect of a single Chinese medicine boiled water is limited, if you are not feeling well, it is recommended to consult a hospital in a timely manner, under the guidance of a professional physician, do not take medication without authorization, so as not to delay the condition.