I have dark spots (not the same as sunspots, I just happen to scar easily. Pimples leave me with a mark!).
But here are the 3 things that work for me (the sunscreen is a no-brainer).
1. Brightening face wash: I use the Boots botanics one available at Target
2. A antioxidant serum: I have used all of the Boots ones with success
3. Brightening pads: these made a huge difference:
http://www1.macys.com/shop/product/o...e%26slotId%3D3
This process keeps things pretty even for me, and helps me get rid of new spots in a few weeks.
But get the spots checked out by a dermatologist to see if you need to worry about cancer!