Abstract
Universal facial masking is one of the most important strategies to diminish the expansion of COVID-19. The influence of elongated mask use on cutaneous characteristics has been widely reported, although the photoprotective role has comparably received less attention. This study aimed to provide guidance in the use of face mask by comparing photoprotective effects of routinely used masks. A total of 12 face masks were used for the study. The amount of light penetrating each mask was measured at midday in June to August 2021 in an open field in Seoul using a light sensor which can measure ultraviolet (UV) A rays, visible light (VL) and near-VL infrared (IR) rays.
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