I have been using this product for about 2 months. I am not sure if I see pore reduction, but I assume those things require patience. All I can say is that at least my pores haven't enlarged too much in this summer heat? The good thing about this serum is that it is great for controlling your sebum. It doesn't dry out your skin too much, but in the beginning it may feel a little dry so you will need moisturizer.