The formula of the L'Oreal Lumi Magique Concealer is very light and thin. It is nice to use under the eye as the coverage is just right for me - it is enough to conceal any slight redness or dark circles, but it isn't too much so that it is cakey or thick and it doesn't crease. The concealer has a brush applicator and I use this to apply the concealer under the eye and then I use a brush or my finger to blend it in.
The Rimmel concealer is quite thick and I would say it is more coverage than the L'Oreal concealer. I do find it to be slightly too thick for me though, as it tends to crease slightly. There is a brush applicator the same as with the L'Oreal concealer and I apply it in the same way.
|Left - L'Oreal Lumi Magique Concealer|
Right - Rimmel Match perfection Concealer
If you are looking for a concealer to cover any discolouration and dark circles then I think the Rimmel one has better coverage, however if you are looking purely for one to brighten and highlight, then I recommend trying the L'Oreal one.
Have you tried any brightening concealers? And would you recommend any?