2.5yo DD has a brown birthmark on her lower leg, it looks a bit like a coffee stain, not raised or anything. She hasn't even noticed it yet, and no-one has remarked on it, but I am worried that when she eventually does notice it, she could be self-concious about it. Is there anything I can do to help it fade, or will it do so anyway as she gets older?
It is probably about 10cm or so in diameter.