Some women notice a browning of their nipples during pregnancy. At the end of pregnancy, this coloring will tend to intensify.
The cause is the melanotropic hormone produced by the placenta. The phenomenon may be surprising, it is not abnormal and can vary from one woman to another. The National Union of Dermatologists and Venereologists warns pregnant women about the risks due to the sun, which could “accentuate this hyperpigmentation”. Women should apply a high sun protection factor (50 and above) to their face as soon as they are exposed.