L.Z.
I have it too on my forehead, and it was worse when I was pregnant due to hormonal changes. You could see a dermatologist and they can give you a cream which will lighten it, but if you go out in the sun it will come back. Being from South Florida, and outside all the time, I haven't bothered to treat it. I just wear sunscreen so it doesn't get worse. It is probably fine, and I am sure you think it looks worse than it really is, we are always so much harder on ourselves.