I usually use Source Pure "oil-free matifying serum" (available at "Ingrid Millet"/"Shimmer" shops) in summer. A box contains 30 capsules - one cap per day. Cost $590 per box. Please check - it seems the shops offer discount recently.
I also find using "hydration mask" (not too rich) each nite will help. I put mask on face before taking bath, steam helps aborption, very easy for lazy people!