Pregnant belly black what's going on

After pregnancy, women will not only show belly darkening, but also show significant melanin deposition in the vulva and armpits. This is because after pregnancy, the placenta will secrete melanin-stimulating cytokines, resulting in significant melanin deposition in the vulva, abdomen and armpits, resulting in significant belly darkening. Generally, the pregnancy line in the abdomen will be significantly blackened, and there will be no significant darkening in other places. Since this is a physiological manifestation, it normally does not require any treatment. Generally, after the end of labor, these melanin deposits will gradually reduce and then turn white or pale white.