Yes, the parsley is good for the dark circles which may be caused by the lack of sleep, stay up too late or bad blood circulation. The parsley has many roles for the health. It can remove the grease, own the decompression, nourish the liver, dieresis, detumescence, calm the nerves, nourish bones nourishes and have resistance to tonify deficiency. Containing the organic acid carotene, vitamin C, sugar, volatile oil and so on, it can be good for the eyes. The inner vitamin C will moisture the eyes which will reduce the dark circles under the eyes to some degree. In addition, the decrease of the pressure role will make a big contribution to the dark circles under the eyes. If you have the dark circles under the eyes, you could use the parsley to release it. Or else, you should eat water more and eat food with vitamin C.