I've found that Olay Total Effects (with UV protection and fragrance free) helped eliminate most of my redness and is a good non-greasy, oil-free moisturizer. I apply the moisturizer after Cellex-C Clear Complexion Complex (dermstore.com w/ free shipping); a toner that contains azulene which calms inflamed and irritated skin. Also, a treatment called MaMa lotion (skincarerx.com) contains malic and mandelic acids that treat a variety of issues such as: large pores, acne, fine lines, discolorations, and redness. I use this every other night. Using these three products have really cleared up my skin.
As far as masks go, I wouldn't use a mask more than once a week; maybe twice if your skin is very oily and isn't very sensitive. A couple I want to try that have received great reviews from others with acne: JOEY New York Pure pores Masque And Blemish Treatment (contains sulfur) and Fresh Umbrian Clay (you can find both at beauty.com w/ free shipping). I hope this will help you!