Hey babes, I have dark circles to. To erase them you need a salmon coloured concealer. If you are a Mac Makeup user you should always use an NW shade as it neutralizes the darkness. Don't use too much and simply pat on the area dont wipe. For this to stay put all day you need to set it with some powder. Works a treat for me. But remember it has to be a salmon colour - whatever your skin tone. I do mine under my foundation first and than pat a little on top of the foundation too! Mac NC shades are for use on red areas of your face so never use an NC shade on your under eye. Hope that helps!