I first used this dye a few years ago as a sort of summer holiday gift to myself. At the time I had very long hair (near my bum) and I was only dying half of it. The bottle had more than enough to cover that section of hair even though I have very thick, long hair. The colour came out a beautiful teal/turquoise colour and stayed very soft and shiny. The colour stayed lovely and vibrant for almost 7 weeks. I had to dye over it for when I went back to school because it wouldn't wash out of my bleached hair! Well recommended. -Mistress Pandora-