The AAD says dermatologists often recommend a sunscreen that contains zinc oxide, titanium dioxide or iron oxide.
Why sunscreen matters here
The AAD says sun protection can help fade melasma and prevent it from returning.
If a white cast stops you
The AAD also speaks to a common complaint. If you are tempted to skip sunscreen because it leaves a white cast on your skin, it suggests a tinted sunscreen.
More on melasma
For a wider view of the condition, see the MedlinePlus melasma encyclopedia entry and the AAD melasma overview.
Making it a habit
Check the ingredient list for the three oxides, then pick a formula you will actually wear every day.