There are many reasons why frontal hair does not grow, such as hereditary factors, androgenetic alopecia, baldness and so on. 1. Hereditary factors: the lack of frontal hair growth is hereditary, if there is frontal hair growth in the family, then the chances of the lack of frontal hair growth will also increase. 2. Androgenetic alopecia: Androgenetic alopecia can be characterized by the lack of frontal hair growth, usually starting from the top of the head. The disease is related to dihydrotestosterone, a metabolite of androgens in the body. 3. Patch baldness: frontal hair does not grow may be due to patch baldness, patch baldness pathogenesis is more complex, has not been fully clarified, may and autoimmune, emotional stress, endocrine and other factors related to the manifestation of round, ovoid, creeping non-scarring alopecia. There are other reasons why frontal hair does not grow, it is recommended that patients go to the hospital in time to improve the examination, follow the doctor’s instructions to take standardized treatment, do not ignore the symptoms, take it lightly.