Hi, I'm 41 and have always had really oily skin. I'm starting a new job on Thursday and I need to get some fairly cheap but effective foundation for oily skin, that I can get from the high street, like Boots or Superdrug. My skin is quite pale but gets easily flushed. I also sweat quite easily. I find with some foundations, when I get a bit sweaty, I end up with little smears of foundation as the day goes on. Any recommendations? Many thanks.