Efficacy of hydrogel patches in preventing facial skin damage caused by mask compression in fighting against coronavirus disease-2019: a short-term, self-controlled trial——Supplemental Material

Supplemental Material 1（Representative photographs）：Some representative photos in our study. The patricipants agreed to be published. Supplemental Material 2（ Questionnaire）：A Questionnaire on the efficacy of the new hydrogel patches in preventing mask-induced facial skin damage. Supplemental Material 3（Supplemental Table）： Overall score for each participant.