I have used Mac Studio products since high school. This concealer in particular, is something I have gone away from, and then came back over and over again. At some point mentally, I feel as though my skin "gets used" to make up and it doesn't work as well. So I have switched to other concealer brands, and other MAC concealers. But then realized this is hands down THE BEST. This one is thick, can be mixed to make it thinner if needed, it is buildable, covers blue, red or dark circles, and doesn't settle in the wrinkles or lines. I am able to use it on a blemish, or cover eye circles with ease. It is a small container, but lasts at least a year for me.