Sorry, I know this is not what you have asked but I just have to add this comment. Do keep one thing in mind, no conditioner will ever fix your damaged hair it is only a bandaid no matter what advertisements tell you. Yes, it can penetrate the hair shaft of damaged hair because the cuticle is opened due to the damage which is why the hair is frayed and rough feeling, but it still cannot cure a problem since the hair shaft is not living. Hair is dead you cannot fix dead. These fun colors are fun but with naturally dark hair I really question if it is worth the risk, especially if one has long hair.
I was from the days when we did heavy bleaching of hair and saw a tremendous amount of damage of all degrees. For some folks it worked out fine some it was disastrous and no amount of conditioning would fix it. Granted hair products have improved over the years but the basics and chemistry are still the same. In my Beauty College days, I had my hair bleached until I saw it becoming damaged then quit, LOL, at my age I no longer have to bleach.
Just a little FYI, back in those days we even had to bleach gray hair to get the colors to penetrate, the new colors today do not have to do that thank goodness. So it shows how things have changed at times for the better. I could actually have fun colors with my platinum hair if I so chose.