Just received it today. The shipping was superfast. My skin felt really smooth after using it. I love it but I hope it won't break me out. I double cleansed my face using the Beauty of Joseon cleansing balm and the Cosrx advanced snail mucin gel cleanser. Then I used the Pyunkang Yul Essence Toner and Cosrx propolis light ampule under and the Cosrx advanced snail 92 all in one cream on top and my skin feels so smooth! 😍 I can't say if it does anything in terms of brightening yet but my face feels really soft. I'm very pleased with this purchase. Will probably repurchase unless it breaks me out.