So I finally got 'round to trying Smooth Finish Flawless Fluide today. (ICYMI: I got the shade Vanille as a free deluxe sample from Sephora with an online code. It isn't my perfect match, but I knew that when I selected it. I was more concerned about finish and oxidizing anyway.) A rough timeline... 2 pm: Applied. No proper face primer used, though I did apply moisturizer (Embryolisse Lait Creme Concentre) a few minutes beforehand. To apply the foundation itself, I used my fingers. Didn't try it with my beautyblender dupe, but I'm thinking fingers were the way to go with this one anyway. No setting with powder. 5-6 pm: Some of my natural shine starting to come through on nose. A little bit of cakiness on the forehead, but I think that's more down to me not exfoliating well when doing my skincare. around 8 pm: A little bit of foundation bunching up in one of the corners of my nose. now: I'll be removing it soon. It's still there, pretty much. But I think it's faded some. So I don't think it would wear a full twelve hours on me, but it would wear for quite a while. No oxidation to report. (Yay!) It does set demi-matte, as they claim. I didn't really see much of the light-reflecting pigment, though. And the coverage is quite light. A bit too light for me for this time of year, and especially when I've got spots and whatnot that need concealing/covering (I would definitely need concealer with this), but I could see myself using this in the summer months, when I want less coverage and have less to conceal.