A mask that’s hard to shed

Melasma, which causes dark patches on the face, is far more prevalent in women than in men. Dubbed the “mask of pregnancy,” melasma triggers include not only pregnancy but also hormonal fluctuations, genetics, and sun exposure. People with darker skin are more prone to it. Melasma is typically treated with topical products that lighten the skin or slough off cells. Laser treatments and chemical peels, however, may worsen melasma. Sunscreen use can help prevent flares.