I don't have acne, but some large open pores, and I have found something for that, which claims to be great for acne scars too, and I could imagine it would work. It's Face Corrector by Trish McEvoy. You can only get that in Harvey Nicks though I think. It's about �20. I use it almost like a polyfilla! It's great. It's a nice base to put foundation on top of, it seems to make open pores, fine lines, blemishes, red patches etc disappear. It's white though, so you can't use it on it's own. Has to be covered by a good foundation. I like Chanel Pro-Lumiere foundation at the moment. I think MAC and Estee Lauder do a similar product. I know for a fact the Estee Lauder one is a pinky colour, cos I got a sample a while back. Good luck