I don't know for sure, but since Studio Fix powder is ideal for combination and oily skin, the liquid foundation is probably similar.
There's more discussion about the foundation here: http://www.specktra.net/forum/showthread.php?t=39473
yep, combination/oily skin...if you like studio fix (powder) you'll like this...the only problem is it's kinda dark, so the color foundation you usually wear, will most likely be too dark...So I'd suggest going to the counter to try it out, before buying it!!!
I was talking to a MA about this and she told me that it is very drying, so if you have dry skin, it most likely won't work for you. She did also tell me that it gives flawless coverage. I can't wait to try it!