There are many reasons why 35 year old women have gray hair on their temples, such as genetic factors, aging, and mental factors. 1. Hereditary factors: 35-year-old women have gray hair at the temples may be due to family heredity, if there is hereditary gray hair in the family, it can cause the phenomenon of 35-year-old women have gray hair at the temples. 2. Age: 35-year-old women have gray hair on the temples may also be due to age, with age, the function of melanocytes in the hair follicles will gradually decline, so the phenomenon of gray hair on the temples. 3. mental factors: women in long-term mental tension, stress, anxiety, irritability, etc., will also affect the normal function of the hair follicle melanocyte synthesis, which leads to 35-year-old women have gray hair at the temples. There are other reasons why 35-year-old women have white hair on their temples, it is recommended that the patient can go to the hospital to improve the examination, a clear diagnosis in the doctor’s guidance to take standardized treatment, not to private treatment, so as not to lead to adverse consequences.