Coffee is an excellent beauty aid and is full of many amazing ingredients and antioxidants.The caffeine in the coffee is beneficial for a number of problems like dark circles, puffy eyes, eye bags, swollen eyes.
I'm listing down a very easy yet very effective Coffee mask that is just amazing for treating under eye issues.

For this DIY you would need just very easy products. Take about 2 tablespoons of coffee and 2 tablespoons of extra virgin coconut oil.Mix the ingredients very well and make a nice paste out of it.
Now cleanse your face very well and apply this mask generously under your eyes.Let it sit there for about 20 minutes and then massage it for about 4 to 5 minutes, after this just wipe it all off using a wet wipe or a damp cotton ball or pad.

To get the best results, Use it at least 4 times a week and you'll definitely see results and the dark circles will slowly vanish!