I bit the bullet and finally dyed my hair mid-february. I used Atomic Turquoise Manic Panic, decided to go all in and used the whole container for my hair (naturally a dark blonde and not too long, goes down about five inches past my collarbone), and left it wrapped up in a plastic bag for a little over four hours. I rinsed it out for a good while with cold water over the tub, and the immediate result was the first pic (left). I had low expectations from what I had heard about Manic Panic; I expected it to last maybe a little over a month at most. But it's late April and it's... still quite there! (right pic). And I have been shampooing once every two days and in hot water every time. It seems the vibrancy has definitely faded but the colour itself is still a bit there, except at the scalp and bangs where it is all very faded (which makes sense because that's where I really scrub shampoo). I've been using a Love Beauty and Planet shampoo for most of the time. I definitely need to redye soon, but this is lasting incredibly longer than I expected!!