Best Korean sheetmasks for sensitive skin. Not all masks are created equal. I have sensitive skin. I once had a reaction to a sheetmask that caused red bumps to form all over my face. After that unforgettably gross incident, I became very picky about which sheetmasks I use. So, I am perpetually on the lookout for effective sheetmasks that are gentle enough for sensitive skin. Here are some of my favorite masks plus tips on how to maximize effectiveness and…