This came out a lovely purpley-blue colour (similar to the gemstone Tanzanite) but the purple didn't last long. The residual blue is very tenacious, especially on my ends that I dip dyed before an all over colour. I dyed my hair about 6 wee ks ago and still have a lovely pastel blue hue- it's proving much harder to shift than my normal reds/ pinks! I like the fact it has faded to blue, rather than a green tint.This went over my bleached hair.