i just had a scar revision surgery on my upper lip, doctor told that only a thin line will be visible but it can not be removed completely, however, i am not quite satisfied with the surgery as i can hardly see any difference,i want to know why stitches scar can't go permanently ?is there no way to get rid of them as they were never there ? and what is plastic surgery where the body skin is used to change the entire face or something like this does not exist ?