So i was nervous at first since i have really sensitive skin. I tried all kind of cleansers and essences during my last 7 years and only this product worked like magic on me. Also i am allergic to many products and COSRX is one of those brands that write what it is in (fully) and there's not much alcohol. 2 weeks using it before sleeping and in the morning and i can tell the difference. Thanks so much COSRX you're a holy grail. I'll buy more and more