I was really excited to try this, because this was my first sleeping pack/overnight mask and I've read really good reviews about cosrx products. It has a really really light scent and evens out my skin really good. I was afraid it will clog my pores but fortunately it doesn't. I only used it three times so I don't feel yet if my skin is more hydrated than usual. At first it was a little bit burning feel on my face but it didn't break me out or anything. I guess my skin was surprised, lol.