This was a good enough serum - my pores looked reduced on the days I used it. Now it is finished I can see that it was having an effect - skin looking a little tighter before, pores a little smaller. The effect wears off as soon as you stop using it but I wasn't expecting anything else. I'd buy it again, perhaps if there were some offers on or something. But I'd rather try a different product first. It didn't give me spots or anything like that.