I'm an NC40 (NC 42 as soon as there's a hint of summer sun) as well and Smashbox's Artificial Light leaves a beautiful sheen, no glitter and no shimmer (well atleast on me and I have oily skin) when used as a hightlight. I use the one in flash which has a peachy-pink tint to it. If you're looking for a pearlescent sheen, then the one in diffuse may work for you. I've heard really good things about strobe liquid as well. I haven't personally tried it, but I would like to (one of the many things I really need to pick up on my next trip to MAC).