I'm a fan of this hair dye but always struggle to find it at a decent price outside of Japan. I'm so happy that Unique Bunny carries it. It's very simple to use, mix the two agents in the giant cup and shake vigorously around 30 times. My hair is naturally black and has not been bleached so the colour is a bit darker, however in the sunlight it's much brighter and a subtle pink/red/brown mix. The smell of the dye is kind of strong so make sure to do this in a well ventilated area. It can also be a little messy so don't wear your favourite shirt or anything fancy 😉