Covering imperfections, enhancing the strong points and natural shapes of the face or illuminating the skin – this is what liquid concealer can do. NYX Professional Makeup Can't Stop Won't Stop. It's highly pigmented, so it covers pimples and other imperfections very well. It's also great for brightening tired skin with dark circles, and when it dries, it becomes... una matte finish, in this modo always has a look naturale.