This review is long, but if you're truly interested in this color and worried about how it may take to treated hair (which I was, I had to hunt for a review on hair that was already bleached before and it was still much darker than mine) then I promise it's worth it!! A briefer review for people who do not care: good product, I found it easy to use (I put all of the steps into a bowl and used a mix of both a brush and my hands), it is messy!! I thought that was just some people being unprepared for how messy hair dye is, but it is a very thin formula that can splatter so easily. There are warnings on the top of the box when you open it to make sure you get all of the product out from each thing, and I did exactly that, so the end result (it was on for a bit longer than 25 minutes, maybe 45 at the most) is the two reds. One is wet, one is dry. I can't say anything about how long it lasts, because I don't really mind having to touch up that much, but do put a towel over your pillow for the first couple days after dyeing.Okay, so I've been bleaching and coloring my own hair at home (with help when needed) for about two years now, and I don't really use box dyes because I love the bright colors of Manic Panic dyes. I tried them for one color and it became my go-to. I've wanted to go to a dark red for a good while, but Manic Panic doesn't have any colors like that that I thought were close to what I wanted. If your end color goal is Lee Chaeryeong from ITZY (when she had red hair), stick with me because that was my goal, and I actually feel pretty happy with the result. My biggest concern when looking for a dye was the fact that box dye is kind of meant to be visible over dark hair. I have light hair, and I didn't want it to be super bright when that wasn't what my goal was. I'm literally ONLY leaving this review because of the fact that I couldn't find ANY that were over pre-treated hair! I found one YouTube review and I decided that that was my sign, so over two days I got the pink out of my hair and dyed it. If you're just looking to see if it'll work over bleached hair, it works perfectly fine (I'm pretty sure, my starting hair wasn't exactly blonde but it was light enough that I am so, so sure it'll work fine), but I did accidentally leave it on for a little more than the instructions say to! Okay, if you're still reading this (honestly I know nobody is but I do not care) and have a bright color you're changing from, this is what I'm here for. So I started with that bright pink in the picture where my face is halfway in frame, and then I tried some at-home color removal tricks to see if they would help; they didn't, so I resorted to shampooing two, maybe three times for long periods and rinsed with hot water. That's where you get to the pictures where I'm holding up the front and then showing the back- not good pictures, but you get the idea. The pink was clinging to the front pieces of my hair, but it had rinsed fine everywhere else, so the last stage of getting my hair prepped to have a dark (and not pinky) red was to use toner on my whole head. I actually don't remember what level of the Wella toner I used, but I think it was either a) exactly the one that people recommend online for blonde, or b) something really close. I left that on for the correct amount of time and rinsed with some still-pink and mostly kind of purple and grey toned hair, which was good enough for me because I just wanted no yellow undertones if possible. That picture is the one where my hair is almost purple and silver. The next two are the results, the wet hair is right after I finished getting the dye out of my hair and the dry one is right after waking up. I KNOW that that was a LOT, but I really need a lot of guidance myself, so if I can kind of help anyone else like that I'd like to try. OK bye