It took awhile to work, but the night I first used it was a HUGE difference. It doesn't make the circles disappear over night, it takes awhile for healing time to begin. I have been using this for a month and it works wonders. A lot of people say I don't look so tired anymore. I've had chronic bags under my eyes since I was a baby. I would highly recommend this to anyone looking for a product that heals and makes it better than cover it up with makeup that just washes off.