Luminous Silk has widest shade range among Armani foundations. The shade systems however make no sense to me. I read comments here and there on beauty blogs that the shades ending in .5 are yellow-based, .0 are neutral and .75 are pink-based. It turns out that's not the case. Giorgio Armani Beauty's website writes and I quote" 3.75, 4.73, 5.25 are cool toned; 5.75 is warm tone; 10 is warm to neutral; 11 is cool and 13 is neutral". Completely confusing!
I was matched for 6.5 at Armani counter. It looked amazing on my skin during the first hour, then turned muddy or more exactly yellow dirty. Shade # 6.5 is too warm for my warm skin tone probably because it has yellow brown undertone instead of yellow. I also tried shade # 6 and 5.75. Shade # 6 turned out too beige on me and it's even lighter than 5.75 (stumped!). Fortunately shade # 5.75 matches me perfectly. It's very similar to Chanel Mat Lumierre in Begie but more light-weight and more dewy.
I find it's best to use a foundation brush to apply Luminous Silk since it's very watery and dries out rather slowly. Using clean fingers, my favorite way of applying foundation, will sheer out Luminous Silk too much unless you want sheer coverage. I skipped the Armani blender brush that is designed for this foundation. I use Sigma foundation brush and it blends flawlessly.
Luminous Silk (5.75) swatched outdoors under mild shading. It is smooth I tell you!
One more swatch under direct sunlight.
Comparison swatches with some other foundations I own
Check out his how-to video on Luminous Silk Foundation.
Note: I have normal combination skin, i.e. oily T-zone and normal to dry cheeks. My complexion has yellow undertone. I prefer medium to full coverage foundations and translucent setting powder.