I have never used sheet mask before, but I really loved Tonymoly I'm Real Mask Sheet SET. Besides the fun packaging, the sheet masks are super hydrating on your skin and after two sheet mask used, I already can feel the difference on my skin. I can say it definitely makes a lot of difference on my skincare routine. I felt a little burn (it didn't really hurt at all) on my eye circle on the first minutes of use, but then it stopped. I feel my skin hydrated and the product is really absorbed by my skin, Love it!