Baby fetal hair does not have to be shaved off. There is no medical requirement that baby’s fetal hair must be shaved off. If the baby’s hair is thicker after birth and the weather is hotter in summer, it can be shaved off after the full moon. This can reduce the localized heat caused by thick hair, which can lead to heat rashes and other phenomena. However, the baby’s skin is relatively thin and tender, shaving the fetal hair will easily damage the baby’s skin and cause unnecessary infections. If bacteria invade the roots of the hair, it may also cause folliculitis. Whether or not to shave the fetal hair depends on the season of the baby’s birth. If shaving is necessary, you need to ask a professional to do it and pay attention to maintaining local hygiene.