This serum is truely amazing, have only used this for a week and my skin is glowing! I was recommend to try this due to the high H Cordata extract in this serum, i already love and use all the propolis products available in K beauty anyway. My skin is combi acne prone and using this with products with centella, teatree, snail mucin, propolis, honey, willow bark, niacinamide, salicylic acid, etc brands such as Cosrx, Klairs, Iunik, Benton, Purito, all their sheet masks too! My K beauty routine is truly complete. I've battled with my skin for years since I was a teen (now 40yrs of age) and even had to go through Accutane treatment, these products from Skinsider have given me skin to really feel confident in, I've never felt that way my whole life. Family and friends can't get over the transformation of my skin since finding Skinsider and using korean products. You won't regret buying this!