Perhaps the most unsurprising offender is the face mask, a necessary — yet not necessarily pleasant — accessory as COVID-19 continues to spread throughout the United States. "Because [rosacea] is a result of skin barrier dysfunction and hypersensitivity around the blood vessels in the face, wearing a mask can exacerbate the disease," Dr Gonzalez says. That combination of friction, heat, and a moist environment created underneath the mask makes you not just more susceptible to acne , but rosacea flare-ups, too. Dr Gonzalez stresses that this should not discourage mask-wearing, as it's essential to protect yourself and those around you. Opt for breathable (yet effective) masks , choose lightweight fabrics, and carry around an extra mask when out and about in case yours starts to feel a little too humid.