If you suffered from dark circles under your eyes for years, then you face is a place that has been taking the brunt of your toxins for years. Dark Circles are not normal, and a sign of bad blood, i.e. a toxic body, especially in your kidneys.
Your body is working to heal this for you, so it is best if you just let it work itself out. If you have to do anything maybe put a warm washcloth press on your face a couple times a day.
Your skin knows what it needs to do to heal you ... let it work its magic.