Vitamin b6 does not treat gray hair. Vitamin b6 is a water-soluble vitamin whose active form in the body is pyridoxal phosphate, a coenzyme that catalyzes a number of key enzymes that catalyze several important metabolic processes in the body. If the body is deficient in vitamin b6, there may be an impairment of hemoglobin synthesis, leading to microcytic hypochromic anemia; it may also lead to seborrheic dermatitis, which is mainly manifested as oil overflow and flaking on the forehead and the sides of the nose. The production of gray hair is related to the death of melanocytes at the base of the hair follicle, which is a normal physiological change. The age at which gray hair appears is related to genetic factors, but the appearance of gray hair does not mean that the body is unhealthy. The appearance of gray hair may also be caused by albinism, which is a hereditary disease that causes melanin synthesis disorders, manifested as a lack of melanin in the skin and hair, most often in early childhood. In summary, vitamin B6 is not associated with gray hair, and therefore cannot be considered therapeutic for gray hair. It should be noted that vitamin B6 can be derived from a variety of grains, meat, eggs, and under normal circumstances will not be deficient, so vitamin B6 supplementation should be carried out under the guidance of a physician.