I've only used this for 2 months and I feel like my pores are much less obvious. I use this after a pH adjusting toner and wait for 25 minutes before applying the Cosrx AHA liquid that I bought together in the same order. I didn't really start seeing effects until I've used both products together. I slowly upped the dosage from once a week, to twice a week and now I'm using it every other day together with the AHA. I'll definitely continue using this. ^^