I reminded everyone last week that we are only 2 months from the summer solstice (peak UVA season). UVA really activates melasma.
Now is the time to step up your Triluma, or other hydroquinone, or Lumixyl (plant based) and really gob on the sunscreen. A good one that’s not chalky but has 18% zinc is the ZinClear SPF 30 by Dermaquest (scroll down on the page to see it). Or you can layer sunscreens as I do by using the Colorescience powder sunscreen on top of a lotion sunscreen.