My hair is currently dyed a mid-darkish brown. I'd like to lighten it or at least remove the dark brown dye. I've done this before a few years ago using Colour B4 & although it's gone okay (always results in a warm light copper brown, which isn't too bad, I'm naturally auburn anyway) it's the faff on that puts me off, especially the finishing stage, if I don't rinse for at least 20 mins, I find it tends to re-oxidise & goes dark again after 2 days. Are there any other brands that work quite well or do they all require as much faff?!