40-year-old woman long white hair may be caused by kidney qi deficiency, qi and blood weakness, blood heat and other factors, you can try Chinese medicine to assist in the treatment, but the therapeutic effect varies from person to person. 40-year-old woman at this time the function of internal organs relatively began to decline, kidney qi gradually weak, kidney essence is insufficient, there will be dark, hair loss white and other symptoms, is a normal physiological phenomenon. In addition, weak qi and blood, blood heat and other factors, may also lead to hair loss of moistening, and the performance of gray hair. Ba Zhen Tang is composed of Radix Rehmanniae Praeparata, Radix Paeoniae Alba, Radix Angelicae Sinensis and other medicines, which have the effect of tonifying Qi and Blood. Rhinoceros Jiao Di Huang Tang is composed of Xuan Shen, Forsythia and Bamboo Leaves, which has the effect of clearing heat and cooling blood (relieving blood heat by clearing heat). The adverse reactions and contraindications of the above drugs are not clear, and patients identified as having weak qi and blood and blood heat may use the drugs under the guidance of a physician. Patients with aggravating symptoms of long gray hair can try adjuvant treatment under the guidance of a physician, and there is usually hope for improvement of gray hair caused by pathological factors.