There are skin bleaching creams available. Anything containing hydroquinone is what works best. Problem is, hydroquinone has some risks associated with it (something like possibilities of cell mutation akin to cancer), so it's not available in the USA. I bought mine online from Australia or something. It needs to be applied twice a day for 90 days. I was never consistent or patient enough to make it through the entire 90 days so don't ask me for a success story
I tried it a few years ago, and no cancer for me yet, btw