It is better to wash your hair after two days after the in vitro transfer because you need to rest in bed for two days after the transfer to reduce the activities and avoid the outflow of embryonic tissue. You need to pay attention to the water temperature after the transfer, the water temperature should not be too low and you need to dry the water and blow dry your hair with a hair dryer in time after washing. You should wear good clothes in time to keep warm to avoid catching cold, which may affect the normal development of the embryo and its implantation. There are no special precautions after in vitro transfer, you can live like a normal person. However, it is necessary to pay attention to moderate exercise and not to be too tired, and normal bathing and hair washing will not affect the embryonic tissue, so there is no need to worry too much. If it is summer, you can take a bath and wash your hair every day, but if it is winter, you need to pay special attention to keep warm after washing, and it is best not to take too long when washing.