The more you pluck the gray hair, the more it grows, this is just a folk saying, in fact, there is no scientific basis. The development of gray hair, the more you pluck or more and more, is not a symptom of hair plucking, but actually a disease process of the development of white hair itself, and there is no relationship with plucking or not plucking white hair, this argument is not valid. For the appearance of gray hair, most of the general factors are their own factors, especially the hair follicle part of a certain metabolic disorder, mainly melanocytes metabolic disorder; some may appear evil melanocytes, can not produce pigment and produce white hair; some are due to the lack of melanocytes in the hair follicle part, will not produce melanin. In either case, it is the basic principle of how acquired gray hair is produced, and it is not quite clear what causes it.