In my experience, most sheet masks are slimy, sticky, or never fit my face. But when a sample of Mediheal's N.M.F. Intensive Hydrating Mask landed on my desk, I was willing to give them another shot. Charlotte Cho, the co-founder of K-Beauty retailer Soko Glam, told me she's been itching to bring Mediheal — a brand that sells five sheet masks every second worldwide — stateside after seeing it become such a hit with Asian consumers. After years of waiting, Soko Glam will finally become one of the first retailers, in addition to Walgreens and Amazon, to bring Mediheal's best-selling cleansers, toners, moisturizers, and face masks to the U.S.