Generally speaking, the causes of dark skin in newborns include the following two situations: First, it is caused by the genetic inheritance of the parents. If the newborn’s parents and other family genetic heritage is very strong, in this case, the newborn’s skin is often very dark. This is a normal physiological phenomenon, parents do not need to worry too much. In addition, this is a family genetic darkening of the skin, and will not gradually become white as the newborn gets older. Secondly, it is due to the temporary darkening of the newborn’s skin. This is mainly due to the hormone levels in the newborn’s body not completely subsiding to normal. This is because the newborn has inherited many of the mother’s hormones, and until the mother’s hormones subside, the newborn’s skin tends to be darker. When the newborn gets older, the newborn’s skin color will gradually return to normal, and the normal skin will be basically the same.