Whether your hair is tied up or worn down has nothing to do with how fast or slow it grows. Hair has its own growth cycle, which is divided into anagen, resting and shedding periods. In the growth period, the hair follicle function is active, the cells at the bottom of the hair bulb divide vigorously, and the nutrients supplied to the hair are abundant, so the hair grows fast. In the resting phase, the cells at the base of the hair bulb start to stop dividing and the hair follicle starts to shrink. But don’t worry, new hair follicles will grow around this follicle and the cycle will start again and again. If you want to make the hair grow faster, some other methods are recommended. For example, usually comb your hair more often with a cow horn comb or do head massage to promote blood circulation in the scalp and supply the nutrition needed by the hair, which can speed up the hair growth. You can eat more walnuts, black rice and peanuts to help hair growth.