My skin is acne-prone, oily and dehydrated. This is one of my holy-grail products. I notice a difference in my skin the moment I stop using the essence. I use it in the morning and night, and it just feels like a safety cover?? It makes my skin feel soft and hydrated. On the times I don't use it, i notice an immediate difference. My skin feels rough and dry and other products seem to just sit on my skin. So This is one of my most loved products. Thank you cosrx!!