Firstly, I have tried so many concealers and was recommended a heap more, but not one lasted a whole day without the slightest creasing. I pay attention to people's under-eyes the most before splurging, and if I see even the slightest sign of creasing, I'd rather keep my £3 concealer which works just fine, only with minimal dryness and creasing.
Bear in mind that I have very dry skin, so I thought that I was the problem: but not with RMS! The formula is thoroughly hydrating, does not gather or move around, does not create and is light enough to be used as a medium coverage foundation. I'M IN LOVE.
I do find that this is best used as an under-eye concealer and does not have enough coverage to disguise extremely red blemishes. Additionally, you do need to first apply it with your fingers as the formula needs to warm up for optimum application; this is NOT dry and blends like a dream, it just needs a more intuitive application. Furthermore, a little goes a long way and I would definitely leave the eye area devoid of foundation so that this product can do its magic. Not applying powder on top will ensure that the creasing is kept to a minimum (unless you can bake to the gods, I'm yet to do it without looking like a literal cake), plus it allows you to re-apply throughout the day without looking cake-y, for a refreshed look.
My only criticism is the shade range: I can imagine the frustration of customers with deeper tones. Additionally, I believe that Cult Beauty should carry the full range of shades, as there is a very fair shade available that is not for sale here.
Overall, a great product, the best concealer I've ever used and definitely worth the money! I can see this pot lasting me a very long time, which is also a bonus.