Gray hair does not increase as there is no necessary connection between the increase in gray hair and hair pulling. The process of pulling out hair does not stimulate the melanin of the skin follicles to decrease, so it will not lead to an increase in gray hair. However, improper hair pulling may lead to localized damage to the scalp or folliculitis, which can lead to localized infections, and hair pulling is generally not recommended. There are more reasons for the increase of gray hair, such as age, as the human body grows older, the melanin produced by melanocytes can gradually decrease, so the older the age, the more gray hair. Some patients are mainly affected by genetic factors, thus appearing the phenomenon of gray hair, especially some children can also appear juvenile white phenomenon. Secondly, living under great pressure for a long time or not getting enough sleep can affect the function of melanin cells, thus leading to the increase of gray hair. In addition, more gray hair may be certain diseases, such as vitiligo, albinism and so on. So white hair will not pull more and more, once the phenomenon of more and more white hair, you need to go to the hospital in a timely manner, after a clear diagnosis under the guidance of the doctor standardized treatment.