The most beautiful blue... ever. It lasts three times as long as the other blue shades, and pretty much fades into what those ones start out as. If you want a super rich dark blue (almost black blue) that fades into a gorgeous bright blue, and eventually bright turquoise, this one's for you. It never really fades into a dull color. I used to shampoo often for a couple of days to speed up the process, but the original dark shade is quite nice as well, particularly when you're in the sun. -PoppyRed-