I have been curious about the Korean product essence, it is said that it helps you recover the moisture of your skin after cleansing, and I've been having dry skin so I was curious. At first I was disappointed by the size of the sample I got in my Birchbox, but you need so little that it lasted me about a week using it morning and night after cleansing and toning. And my skin feels very soft and hydrated, even before I use a moisturizer. I have become an essence convert.