Generally, this kind of situation can be scraped off in moderation, which generally has no effect. Don't worry too much. Hair can grow back after shaving, as long as the hair follicles are not damaged. Don't worry too much if there are no other anomalies that can be observed for the time being. Low hairline is related to personal physique and personal hair quality, not disease. Individuals also change with age. Generally, he grows taller after middle age. At that time, the hairline was difficult to grow back, and the hair grew naturally. Try not to do too much damage to your hair.