Fetal fat recedes about 3-10 days after birth, depending on the individual. Fetal fat is a white, greasy, sticky substance that covers the skin of the newborn and protects the fetus. There are individual differences in the time it takes for the fetal fat to recede, which is related to the area and thickness of the fetal fat cover, postnatal care, hygiene and so on. 1. Area and thickness: when the baby is born with thicker fetal fat covering a wider area, it will take longer, usually more than three days. 2. Nursing: if the baby’s mother in time to the baby with a soft towel gently wipe off the baby’s body sebum, in a short period of time will soon be clean. 3. Hygiene: If the baby is bathed or wiped every morning and evening after birth, all the sebum will be removed in about three days. If there is any doubt about the time for the sebum to disappear, it is recommended to consult a doctor.