The harmful effects of shampooing hair with the leaves of the lateral cypress are not yet clear, this product has the effect of hair growth and hair growth, etc. It should be used in accordance with medical advice. Lateral cypress leaf is a kind of Chinese herbal medicine with bitter and cold flavor, which belongs to the lung meridian, liver meridian and spleen meridian. It has the efficacy of cooling blood and stopping bleeding (making blood cool and moist, preventing bleeding), producing hair and black hair, resolving phlegm and relieving cough. It is used in treating epistaxis (nosebleed), vomiting blood, hemoptysis, hematochezia, bleeding in stool, coughing with lung-heat, discharging blood with excessive menstrual flow or dribbling, premature whitening of beard and hair loss due to blood-heat. The adverse reactions and contraindications of this product are not clear. The use of lateral cypress leaves include decoction of soup for internal use, or made into pills or powder. Externally, it can be washed with decoction water, or pressed or powdered to apply. Specific use should be under the guidance of a doctor to identify the use of medication.