Three-year-old baby face scratched a skin, need to pay attention to hygiene, strengthen the care, generally will not leave a scar, if it is keloid, you can use medicine to prevent. Three-year-old baby face scratched a skin consider just hurt the epidermis, generally will not leave a scar. Daily should pay attention to keep the local skin clean and hygienic, do not let the baby scratch the local, can be appropriate to apply some iodine pomade for disinfection. If the wound appears red and swollen, you can also apply some antibiotic ointment under the guidance of the doctor, such as erythromycin ointment, mupirocin cream and so on. If the baby is keloid, in addition to paying attention to hygiene and strengthening care, it is also necessary to consult a doctor in a timely manner, and if necessary, use medication under the guidance of the doctor for preventive treatment and so on.