I've been using this foundation in Neptune for a few weeks now and I have to say that I'm quite satisfied with it. The coverage is sheer-to-medium and could be buildable. I usually apply a thin layer with a sponge when I need coverage that lasts longer than what Studiofix provides for me. Neptune is a great colour match for my MAC C3 skin and does not change colour or fade, even with the thin layer I apply. It's definitely better suited for people with oilier skins and who are not prone to breakouts.