COSRX products didn't failed me. Currently, I am using 4 products of this brand and this COSRX centella blemish ampoule is one of the holy grail product of this brand. I have combination skin, excessive sebum in my T-zone but when I used this product on that first day I already noticed result, my T-zone produce a little sebum unlike before. It's a great combination also of COSRX Advance Snail 96 Mucin Power Essence.