Instruct: Classify Amazon reviews into positive or negative sentiment
Query: amazing!

The best I've used so far, and i had quite a bunch of other colors and brands. =D Lasts about two months without retouching in my hair, it's always bright, even when the pinkish is vanishing. It stays in the hair very easy, even if it's not bleached until white. I just wouldn't recommend if you intend to have you hair another color afterwords... it's almost impossible to take it out without damaging the appearance of your hair. =) Also, I've used the same bottle for a whole year now and it's still not over, and i dye all my hair (goes to my shoulders).