Treatment for Melasma on Hispanic Skin?

My melasma is getting darker and spreading across my face. I stopped taking birth control 5 years ago, used Tri-Luma, tried Obagi twice, wear 60spf sunblock and always keep my face out of the sun; but the melasma continues. I've been told that because of my skintone (Hispanic), peels and laser treatments could potentially make my melasma worse. Any advice on how to address my melasma would be greatly appreciated. Thanks!