After hair transplant surgery, there will be a replacement period, which is often referred to as the “shedding period”, generally lasting 1-3 months. However, each person’s body type is different, so the exact length of replacement time varies from person to person. In the first 3 weeks after hair transplantation, the newly planted hair follicles will grow new hair, but after a period of time, they will fall off again, this situation is temporary, because the healthy hair follicles have been planted in the previous location of hair loss, the hair cells in the follicles will breed new hair, after the new hair is formed, the original hair will not get nutrition and will fall off, this period is the replacement period. The transplanted hair follicles are still alive, and as long as the follicles rest for enough time, the new hair will grow out again and the effect of hair transplantation will be achieved. Patients in the replacement period should pay attention to improving their daily habits, avoid eating spicy and stimulating food, do not drink alcohol, but eat a balanced intake of nutrients, eat more protein-containing food; pay attention to maintaining regular work and rest, do not stay up late; pay attention to regulating emotions, keep a calm state of mind. Also keep your scalp clean to prevent the growth of bacteria. After the replacement period, the hair transplant will enter the stabilization period, and the hair that grows out will not fall off easily.