I have used Philosohy's Purity face wash for a long time and like it however the signs of aging keep getting two steps ahead. I was thinking of getting some products that would keep my pores from enlarging further. There are a ton of infomercials for celebrity skin care regimes like Heidi Klum, Susan Lucci and regular lines like Murad. Further complicating things are the drugstore staples like Olay. What do you use and is it worth the cost?