Melasma is very difficult to treat and I've tried treating it like those on the skin lightening forum treat hyperpigmentation. Be care melasma and hyperpigmentation is different. RA will darken your melasma as it has done with mine. I was back at zero with treating my melasma. So back to weekly LA and glycolic peels, vit C serum and SS...it's breaking up again but geezzz the process is tedious. Do not use RA at all! Diet is important too, don't smoke as it makes your melasma darker too.
Not sure about F&F, but gdluck