I have dark circles too and this has been the best for me so far. My eyelashes usually create unsightly lines on my lower lids with previous concealers (MAC, BB, CD) but this sits well and foundation comes on flawless. For me, the tiny brush allows for the perfect amount and enough coverage without looking too cakey or obvious. Have to say it's more suitable for fairly clear skin as it's a tiny amount for the price and not the best for large areas. It's more a concealer than a primer.
I started using a couple of these based on good MUA member comments and reviews.....I agree, these are truly professional quality. They are perfect colors and light, non cakey textures for small "corrective" skin tone needs. I have used the green and yellow for tiny pink and red spots (rosacea and broken capillaries). I don't think I would like it for larger areas, though, too hard to blend in. It takes more work and precise application (before foundation on top of primer with a good concealer brush or very carefully over foundation) to get the right effect, but it is worth it if you want to spend the time. These are more of a challenge to use than skin toned concealers. It took quite a bit of practice for me to get it right....so I only use these when I have tons of time....too much work for everyday use, and overall I prefer skin toned concealers.
If you have read my Notepad, you would know I have serious dark circle under eye. Orange absolute a correct shade to hide the dark circle. This fluid master corrector is the best texture for using under eye area. No fine lines appear after setting with loose powder and not caky in the wet summer days. Glad that GA makes such good product.