I bought this yesterday on a whim after stopping into Bluemercury to purchase another product. This morning, I woke up with blotchy, hormonal skin, as is common for me around the beginning of my period. After showering and washing my face, I put on the mask while completing the rest of my morning routine. I left it on for around 10 minutes, and the red blotch on my right cheek was almost completely gone, and has stayed gone all day. This mask is a miracle--I've tried several sheet masks, and none have had such an immediate drastic effect. While it's on the pricier end, especially for me as a college student, I'm picking up a few to keep in my skincare stash. Definitely recommend!