Word of advice if you use most types of dye with a lot of conditioner the color will appear very light or not at all. I experienced this myself
Posts by Creature of Whim
I found that if you seep two bags of black tea for 30 sec, freeze them over night, and let them sit on your eyes, it works. Apparently the coldness of it helps direct blood flow to the circles, and the black tea helps tighten the skin.