This for sure covers it all, Medium is a color match it the regular concealer (which is darker than what I usually get). I don't know what they mean by "illumination" as it does brighten, but that's because it's lighter than the regular medium shade. So I don't think that's the best thing, it's lighter and pinker than the regular one. That's the only difference. This as the other one doesn't set and looks cakey when I do try to set it with any powder.