Clinique always gives these in gift with purchases, so even though I've never bought a full sized, I've used probably 3 mini bottles already. The bottles are great for reusing too if you want to decant a toner or makeup remover for on the go.
To use it, I shake to mix the liquid well and pour a bit out onto some makeup pads. I hold them over my eyes for a while then swipe off and it takes off so much makeup in just one swipe. It's quite relaxing and very gentle on my skin. It also works for general foundation and other makeup, but I find it does leave a bit of an oily feeling on my skin. Not a huge problem since I usualyl wash my face with cleanser right afterwards anyway.
I've found bi-phase makeup removers great for stubborn waterproof makeup, and this is a perfect example. Will take off your whole face at the end of a day with just a gentle wipe.
I wouldn't personally go out and buy a full sized bottle since I usually just get these for free with other purchases, but would definitely recommend this.