This is one of the products I like to buy everytime I go to Korea. (I buy it there because I can purchase tax free through duty free!)
I first found out about this product from a friend in Korea who works at a magazine in Korea. Apparently, this product took Korea by storm! Since trying it out on her recommendation, I've purchased this multiple times and I love using it.
It has a lovely signature "hanbang" (fermented) smell that Sulwhasoo is famous for. I use this after my toner and it makes my skin feels so soft and clear and my next few steps also sinks in more easily.