Dark circles under the eyes are heavy, may be caused by melanin deposition, may be caused by poor blood circulation, may be caused by liver qi stagnation, may also be caused by kidney deficiency, so the problem of dark circles under the eyes to specific problems specific analysis, according to different reasons to target treatment, as follows: 1, melanin deposition: melanin deposition will also appear when dark circles, can be considered to beauty The first thing you need to do is to take a look at the actual product.