There are two causes of dark eye circles. Most people get dark circles because the skin around their eyes is really thin and the blood vessels underneath show through. Usually these types of circles are slightly purple or red. In these types of cases, a Vitamin K cream should help. The other cause is pigmentation around the eyes. Usually ethnic skin tones tend to have darker pigmentation around the eyes. For dark pigmentation, you can try a skin lightening cream with Kojic acid. Whatever you do though, make sure you find something that is gentle enough for the delicate skin around the eyes. Hope this helps!
Vitamin K will help, but take it as a magnesium/calcium supplement. It reinforces the fine bliid vessels from the inside out so they do not rupture & seep purplish blood visible through the thin skin. See a nutritionist who can help you tweak your diet & perhaps get more sleep. Hope this helps. Good Luck!
Vitamin K is actually magnesium. Take the supplements as the effect of the cream is an illusion created by finely ground reflective particles in it. THe supplements strengthen the walls of the fine capillaries beneath your eyes & the drops of fine blood that have seeped out creating the shadows gets reabsorbed by the body & since the blood vessel walls are stronger, new bloob does not seep out & your shadows will lighten. I did this myself & take the Jamieson brand magnesium supplements as mentioned on the jar.