So far has worked really well on my blemishes. I was able to reduce the pigmentation and calm down existing blemishes. Doesn't leave my skin dry and it's better than Effaclar Duo, Neogen A-Clear Aid, and Some by mi cream. I really want to try the dark spot correcting serum but the price is higher on amazon than actual kbeauty websites. If you're not in a rush to receive this product definitely try out korean websites for a better price. I only ordered this on amazon because I needed it asap. For the size you can't really complain it's small and cute but you don't need much since it's just a spot treatment and it's consistency is fluid enough to spread more. I will be ordering more when I'm close to finishing my bottle!