Good makeups for melasma are hard to find because you want something that gives you good and even coverage. They're pricier than other types, but a good one to try is Naturophatica products.
You can use Bare Minerals makeup over a concealer like Almay. It is best to use mineral makeup because they have minerals in the ingredients for different kinds of skin aliments.Apply the concealer first lightly over desired skin areas and then lightly dust the mineral makeup over to set makeup.