Please suggest good dermatologist for chronic melasma treatment in Noida

Same as title My mom is having these spots for 2ish years now, the dermatologist we see, gave meds, did rounds of peeling treatment and now even laser. But issue is still same and spots are on whole forehead, not going away and my mom gets very conscious because it's too visible and people notice it too. Need to see good doctor who'd diagnose actual issue and suggest if it's going to be even treated or not, not give false hopes. Thanks in advance