Tldr: This is a stunning foundation to perfect your skin whilst keeping a natural look. Very similar to Armani Luminous Silk.
I have large pores, my skin is dry on the cheeks but oily on the T zone. I have yellow undertones but my face skin is sensitive, so I often have a lot of redness on the surface.
This foundation really looks like my skin but more uniform. It's pretty sheer and could be considered medium coverage if you have already great skin (nothing to cover up, then), but redness still comes through. It melts into the skin in a way that it looks better but I don't need to re-add dimension to my face with any bronzer, blush or contour. I do need to bloat after 3h, just like with every foundation, so there isn't any oil control there, even compared to non-gel formulas. When I (carefully) blow my nose, it rubs off a little, but gracefully. It does not settle into my tiny wrinkles (I'm 32).
The colour Alabaster is very close to the shade 4 from Armani luminous silk (my holy grail), with a slightly more peachy undertone. It is so similar that I wore them on either side of my face and it didn't look like I had different colours on. I rarely wear foundation and upon very close inspection, my husband said the Armani one has a "slightly more powdery effect" whilst Chantecaille looked like I had no foundation at all (except I looked less red and a little "airbrushed" compared to my natural skin), so Chantecaille wins this battle, but not by much!
The Armani luminous silk foundation is very very comparable to this one, and much cheaper. So I am giving the Chantecaille future skin gel foundation 4 stars.