There's a really miniscule bit where I had mine that just looks a little lighter (not that I'm particularly tanned anyway) but it's not something you'd actually notice unless you were looking for it. Some guy I knew way back in those days had such a fear of getting it done that he was totally tensed up when they did the injection and simply because of that it bruised up all around his upper arm and left a much more sizeable scar than the rest of us got