Ok, I know this sounds weird but sometimes dark eye circles
are a result of over active yeast in one's body. Cut out sugar,
dairy and start taking acidolpholus. It worked for my sister and
for my BIL on the other side of the family. Also, increase rest a
bit. A girlfriend went to an allergist for something else. She eliminated some food allergens-chocolate, caffeine and some other things that were causing headaches and the dark circles
under her eyes went away. Interesting, eh?