Suggest Remedy To Lighten Skin Around Burn Wound

Last week I had an accident with hot water and ended up with a 2nd degree burn on my chest & Breast. I been using silver sulfadiazine n it's looks like it's healing well however I'm noticing i'm getting a dark color were my wounds is at. Is there a medicine to get rid off the dark color or a remedy? Do dermatologist have a cream to lighten up skin? I'm a light person and it bother cause now I can't were a front open dress because of dark mark that is left by the burn.