DD fell on the corner of the coffee table some time back and earned a black eye but we didn't do anything. The only thing that bothered me (other than rude comments from strangers or 'jokes') was that it took ages to go away- like weeks! But it was nothing compared to the cut on the eylid of the other eye she got a few weeks later from the same coffee table- she still has the scar despite a GP visit and butterfly stitches. So there's really not much one can do about bruising- other than giving arnica homeopathics??