If the redness on a newborn’s face is due to dilated capillaries, most of the redness will subside within 1-2 weeks after birth. This is mainly due to the fact that newborns are relatively young and their facial skin is very delicate, and the capillaries fill up causing the redness to be very visible, especially if the newborn is in a very hot environment. When the newborn is one year old, the situation of red blood on the face can naturally improve, which is caused by eczema. Eczema is mainly caused by the newborn’s allergy, combined with external factors, such as breastfeeding or formula milk, which gradually aggravate the condition. This condition can be treated with topical glucocorticoid ointment or with amino acid milk powder, and most of it will gradually subside around the age of one week.