Dark neck lines during pregnancy will usually be relieved or even subside after giving birth to a baby. Neck lines during pregnancy are mainly due to the increased secretion of estrogen, after giving birth to a baby, estrogen returns to the normal level, can gradually recover, or even subside. After pregnancy due to the role of estrogen, the vast majority of pregnant women will appear face, neck and areola and other parts of the skin pigmentation, black symptoms, postpartum estrogen level recovery, pay attention to maintenance, black neck and other symptoms can be gradually restored, daily life in the massage of the local skin and apply special body lotion for pregnant women to relieve. So, during pregnancy neck lines are very black is a normal phenomenon, after production can gradually subside, do not need to be too anxious. It is recommended to maintain a comfortable mood during pregnancy, strengthen nutrition and follow the doctor’s instructions for regular pregnancy checkups.