C.R.
I'm 46, have an oily T zone and olive tone skin. I have suffered from large pores on my cheeks, nose and forehead. I really suggest that you use a mild face soap ( I use Dove sensitive soap bar, yes on my face ") and Stri Dex maximum strength medicated pads with no alcohol at least once a day. They contain salicylic acid which is what large pores need to keep clean and help with cell turnover (wrinkles). Also there is an awesome little face cloth: http://www.amazon.com/Wonder-Cloth/dp/B000FGS0RO/ref=pd_s... no kidding this little cloth rocks! Smooths you face and keeps those large pores CLEAN and appear less large. Also can be used with just water to remove ALL of your make up. I too tried just about everything that was made for large pores and nothing seemed to help sometimes it even made my face breakout.
And you already just use powder so that helps with your pores not appearing as large too. I use Everyday minerals. They are very reasonable priced and offer a free sample kit. Love them. http://www.everydayminerals.com/
Best Regards,
C.